Can be combined to max. Are there any obstacles blocking the air inlet or outlet of the indoor or outdoor unit? P1 Intake sensor error; P2 … Explanation & Check points: Please wait as the unit is preparing to blow out warm air. board or the outdoor electronic control P.C. Abnormality of comp. Except for when the lamp of a multi unit blinks while the unit is on standby. Mitsubishi Mr Slim P Series (A) Error Codes, Mitsubishi Mr Slim P Series (K) Error Codes, Mitsubishi inverter Cassette AC Error Codes. Operation Led: No lit. Other abnonmality. Flexibility to create very large systems. Mr. ... Mitsubishi Electric is constantly developing and improving its products. (When the outside temperature is too low and humidity is too high, frost is formed.). Would be much appreciated as single mum with little funds n hot Christmas looming. Code E0 Error detail Remote control transmission error (signal receiving error). For details, check the LED display of the outdoor controller board. Fan motor problem. ● Second and third units in triple control. - Connector for the outdoor unit's protection device is not connected. Wrong cable size/spec, Start-up time over. If within range for at least 30 minutes and problem persists, replace Remote Controller. THHS thermistor problem, Over current protection. The same is true in the emergency cooling operation. If you have an air conditioning fault on your Mitsubishi Electric equipment it's important to get it diagnosed quickly. System transmission error - check for possible comms fault between I/C and R/C, could also be incorrect group or master/slave settings (check CN40, SW2 and SW6), TH1 fault - check return air thermistor (6.4K_ @ 20°C), TH2 fault - check coil/pipe thermistor (6.4K_ @20°C), Drain sensor fault - check drain sensor resistance, connection and continuity, Drain fault - unit has detected high condensate - check for blockage in drain or tray, pump failure or sensor fault, Frost protection in cooling/Overheat protection in heating - detected by indoor coil sensor - general causes are lack of air flow or refrigerant charge problem, System error - address setting fault - check CN40 SW2 and SW6. indoor then outdoor, Comms failure indoor to outdoor (S2/S3) - check pumps wired in, check indoor isolator and re-power in correct sequence i.e. Polarity problem on TB7, Bus circuit busy - check if indoor unit, Lossnay unit or anything else has been wired into TB7, instead of TB3, Communication issue - no response back from unit whilst system is operational, Communication error - loss of voltage or noise entering the transmission line, K control communication error - R22 type unit connected onto M-Net circuit comms error, K control duplicate address error - two or more R22 type units connected onto M-Net circuit with the same address, K abnormality - high pressure abnormality or low pressure abnormality, K abnormality - inner thermostat function, discharge temperature abnormality, shell thermostat function, over current protection, K abnormality - radiator plate thermostat function, K abnormality - outdoor thermistor abnormality, K abnormality - pressure sensor abnormality, indoor/outdoor communication error, K abnormality - refrigerant overcharge, abnormal voltage, abnormal CT sensor, Comms fault between I/C and R/C check connections to MA R/C and check for 12Vdc check R/C not set sub controller, MA R/C communication fault - check connections on TB15 or that the controller was removed while the I/C was powered, MA controller comms fault - check cable length no bigger than 500m, check connection and type of cable used, check R/C not set sub on field settings, MA controller comms fault check cable length no bigger than 500m, check connection and type of cable used, check R/C not set sub on field settings, MA Controller comms fault - check cable length no bigger than 500m, check connection and type of cable used, check R/C not set sub on field settings, A-Control E6/E8 fault - see Mr Slim fault code list, A-Control E7/E9 fault - see Mr Slim fault code list, A-Control EA fault - see Mr Slim fault code list, A-Control Eb fault - see Mr Slim fault code list, A-Control EC fault - see Mr Slim fault code list, Over capacity - (R2 150% index exceeded) (Y 130% index exceeded), Capacity setting error - SW2 set wrong on indoors, SW5 on YHMA outdoor, (SW3-10 on older kit), Error in number of connected units - loss of M-Net voltage (short or break), no power to BC, wrong SW5 setting on box, wrong box type, Address setting error - OC or BC addressed wrong, Attribute setting error - SW3-1 setting on a GUF, Port setting error - check if too much capacity on a single port, wiring SW2 setting, wrong SW14 setting or wrong units on a box when using multiple boxes, Remote control sensor fault - SW1 - 1 on and no controllers fitted or faulty remote controller, Function setting error - wrong SW5 setting or wrong resistors fitted on YHM-A, Model setting error - SW5 set wrong or wrong resistors in, Incompatible equipment on M-Net - check split with MAC 399 wired onto the TB5 line TB5 line, not the TB7, Drain sensor error/Float switch connector (CN4F) open, Forced compressor stop (due to water leakage abnormality), Freezing/Overheating protection operation, Communication error between indoor and outdoor units, Indoor unit control system error (memory error, etc. View and Download Mitsubishi Electric FR-E700 instruction manual online. PROBLEM WITH AC UNIT: Freezing/Overheating of indoor unit heat exchanger – mainly caused by reduced air flow through indoor coil. Any help appreciated! An abnormality other than above mentioned is deteced. - check mains supply, Low DC voltage on Vdc on fan inverter - check CNVdc for 300Vdc on diode stack and check mains power supply to outdoor unit, High temperature on heat sink on inverter - check for blockages in air duct, failure of INV fan or failure of thermistor, Fan inverter heat sink overheat protection. These cookies will be stored in your browser only with your consent. board or the outdoor electronic control P.C. Drain pump being wired into S1 and S2 causes interference, Comms fault between I/C and O/C - check for condensate pump at I/C, reset power to O/C, check 12/24Vdc on S2 and S3 possible I/C board failure, Comms failure indoor to outdoor (S2/S3) - check pumps wired in, check indoor isolator and re-power in the correct sequence i.e. Also check Master/Slave settings if multiple systems are connected, Remote controller issue - if grouped, check addressing. Symptom: The unit cannot be operated for about 3 minutes when restarted. MITSUBISHI Mitsubishi Limiservo X G series TECHNICAL INFORMATION MANUAL Motor XL-G554-10(Y), XL-G554-20(Y) Control box XC-GMFY(CE) Induction type AC servo motor and control box with automatic needle positioner Thank you for purchasing this product. Symptom: Water leaks from the outdoor unit. Possible defective board, Phase detection circuit fault - faulty outdoor board, No input detected at outdoor unit - outdoor board defective, Two or more protection devices are open - check protection devices for disconnection or contact failure, Return air thermistor fault (TH1) - check if TH1 disconnected or open or close circuit, Liquid pipe thermistor fault (TH2) check if TH2 disconnected or open or close circuit, Drain sensor fault - DS open or close circuit, High condensate level - drain pump failure or blockage in the drain, Freezing/Overheating of indoor unit heat exchanger - mainly caused by reduced air flow through indoor coil. 7- Mitsubishi Packaged Hot Water Heat Pump CAHV Error Codes. Mitsubishi Split Air Conditioner Timer Light Blinking, Mitsubishi Electric Aircon RedLINK Error Codes. Explanation & Check points: Outdoor unit is in defrost. We also use third-party cookies that help us analyze and understand how you use this website. 4) Measure the resistance of the outdoor coil thermistor. Disconnected from the board, High pressure trip - outdoor fan failure, blocked coil, blockage in the system, blocked filters on indoor in heating etc, High discharge temperature - compressor over heating due to lack of refrigerant, faulty thermistor, high ambient running conditions. Check LEV operations. Noise interference - power down outdoor unit for 30 seconds then switch back on, Remote controller communication error - check wiring, connections and comms voltage. ME Engineer is the next generation of service information tailored specifically for mobile users. Some MITSUBISHI Forklift Truck Brochures PDF are above the page. This sound is also heard when the outside air blows into the drain hose in case the outside wind is strong. ME Engineer will provide Installers and Service Engineers of Mitsubishi Electric Air Conditioning, Heating, Ventilation and Controls products easy access to the most up to date and detailed service information direct from in-house technical experts at Mitsubishi Electric. 1) Check the indoor/outdoor connecting wire. The unit may suck in an odor adhering to the wall, carpet, furniture, cloth, etc. © 2014-2021 ACErrorCode.com. Is the polarity (+, -) of the batteries correct? Outdoor unit does not operate. This heats refrigerant in the system which in turn heats water for domestic hot water and space heating. Your email address will not be published. Required fields are marked *. All rights reserved. replace the original remote controller. Possible defective board, 49C open - compressor inner thermostat for open circuit or contact failure, 63H open - check high pressure switch for disconnection or contact failure. It may take a certain time to reach the setting temperature or may not reach that dependingon the size of the room, the ambient temperature, and the like. Out door control system. Ecodan air source heat pumps use 1kW of electrical energy input and take 2.2kW of low temperature renewable heat energy from the air, producing a high efficient 3.2kW heat energy output. is used. When the breaker is turned on, the horizontal vanes’ position will be reset in about a minute. If high current is detected for more than 10 minutes - check inverter balance. “Flash-injection Circuit”, which is designed for our ZUBADAN CITY MULTI (air conditioning system for cold regions), is mounted in our new Hot Water Heat Pump. 37 Parameter error] and warnings (except [AL. THHS thermistor problem, Thermistor fault at indoor/outdoor unit - check fault code address, Thermistor fault at indoor/outdoor unit - check fault code address (indoor fault - check SW7-3 is off), TH5 open/short circuit - check if the TH is disconnected from the board, TH6 open/short circuit - check if the TH is disconnected from the board, TH7 open/short circuit - check if the TH is disconnected from the board, TH8 open/short circuit - check if the TH is disconnected from the board, TH9 open/short circuit - check if the TH is disconnected from the board, TH10 open/short circuit - check if the TH is disconnected from the board, BC box thermistor error - TH11 open/short circuit, disconnected from board/pipe, BC box thermistor error - TH10 open/short circuit, disconnected from board/pipe, BC box thermistor error - TH open/short circuit, disconnected from board/pipe, BC box thermistor error - TH15 open/short circuit, disconnected from board/pipe, BC box thermistor error - TH16 open/short circuit, disconnected from board/pipe, Pressure sensor fault outdoor unit/BC box - check fault code address/SW1 pressure sensor readings, Pressure sensor fault (PS2) in the BC box, Pressure sensor fault (PS3) in the BC box, A-Control UH fault - see Mr Slim fault code list, Current sensor fault, ACCT or DCCT - check inv. R22 refrigerant charge appears Ok (eg Pres temp corresponds enough to what should make run comp at least to start up) Fan motor problem. If the resistance is normal, replace the outdoor controller board. ERROR CODES – R410A Black = All R410A Red = FD Split 1, 2 Series R410A Blue = KX4 & KXR4 Series R410A (does not cover SRK & SCM MODELS) Can also be caused by 49C (comp inner thermostat or external Klixon ) tripping, Inverter heat sink temperature too high (TH8) - check for lack of air flow around heat sink, no silicone paste, faulty thermistor (temperature can be read from service tool (or PAR21 on power inverter model)), Compressor over current - carry out inverter output test and electrical checks to the compressor, Low discharge superheat - check TH4 reading is correct. When the indoor coil or the room temperature thermistor is short or open circuit. When water leaks or drips from the indoor unit. Symptom: The room cannot be cooled or heated sufficiently. After the reset has completed, the normal horizontal vanes’ operation resumes. Symptom: Mist is discharged from the air outlet of the indoor unit. Please wait. ), Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit), Compressor overcurrent interruption (When compressor locked), Abnormal high discharging temperature/49C operated/ insufficient refrigerant, Abnormal high pressure (63H operated)/Overheating protection operation, Compressor overcurrent interruption/Abnormal of power module, Abnormality of super heat due to low discharge temperature, Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit/Current sensor error, Low pressure switch failure - check connection on the board and continuity of switch, High pressure switch failure - check connection onto board and continuity of switch, Both pressure switch contacts are open at the same time - check connection onto board and continuity of switch and for a potential board failure, Mis-wiring fault between FTC and Ecodan - check S1,S2,S3 also check voltages and comms, Mis-wiring fault between FTC and Ecodan - Check S1,S2,S3 also check voltages and comms, Unit cannot finish start up process - generally caused by a comms fault, Ecodan high pressure fault - mainly caused by incorrect water flow rates - check with flow setter, Ecodan high compressor discharge temperature - mainly caused by refrigerant shortage or dirty condenser, Ecodan discharge thermistor problem - mainly caused by TH4 discharge thermistor - open/close circuit, Open or close circuit Ecodan thermistors (TH3, TH32, TH33, TH6, TH7, TH8) - open or close circuit or disconnected from main board, Inverter heat sink overheat protection (W50 and W85 models 77°C, HW140 model 95°C - reduced air flow through Ecodan - faulty fan motor, Inverter/Compressor over current - system indicates possible IPM error, Ecodan fan motor problem - mainly caused by DC fan motor being disconnected, connected or obstructed with the power on or possible main board fault, Over voltage or under voltage - mainly caused by either CN2 or CN5 loose or disconnected or decrease of mains power supply, Overheat protection TH3 ≥ 70°C or 63HS ≥ 70°C saturation temperature, Compressor over current/Compressor lock - occurs within 30 seconds of compressor start, Abnormal running current - < 1A or > 40A detected during operation - check CN5 connections, Over current detected after 30 seconds of operation - do an inverter test to determine outputs balanced, Transmitting Error PAR W21 - check refrigerant address on SW1 of Ecodan, Transmitting Error (PAR W21) - check refrigerant address on SW1 of Ecodan, Receiving Error (PAR W21) - check refrigerant address of SW1 on Ecodan, Indoor/Outdoor communication error - mainly due to Ecodan being powered up before FTC(2), Non-defined error code - noise interference - power down Ecodan for 30 seconds then switch back on, Serial communication fault between Ecodan main board and Ecodan inverter board - mainly due to loose CN2 or CN5 cable, Flow temp sensor fault - TH1 not connected, short or open circuit, Over heating at heat exchanger - lack of water flow, air in the system, flow rate incorrectly set, blockage or pump problem, No temp change at plate heat exchanger - problem with flow rate (too high) - incorrect sizing of system, TH5 Fault - TH5 not connected, short or open circuit, FTC not configured for heating only, Inlet water temp fault - TH32 is below 10°C whilst compressor is in operation - possible thermistor out of range, short of gas, incorrect sizing of radiator or problem in the water circuit (blockage, pump failure etc), Comms fault between boards - check between control board an inverter board, Comms fault between boards - check between control board an fan board, High compressor discharge temperature - discharge temp has exceeded 115°C or more - check if short of refrigerant or discharge thermistor, Low pressure fault - low pressure sensor sensing less than 1 bar immediately before starting, High pressure fault - check system pressure exceded 32.3 bar, check high pressure sensor (63HS) against gauge pressure, Pump interlock error - pump interlock open whilst system in operation, Abnormal water temperature (TH6) has exceded 85°C, Water source heat exchanger frozen (TH6) or (TH8) reading 2°C, Low inverter board BUS voltage - less than 200Vdc is detected during in inverter operation - check mains supply, Bus voltage error PAM damage - replace the inverter board, High bus voltage Vdc>380v - check power supply and possible faulty inverter board, High temperature (85°C) on heat sink on inverter - check for blockages in air duct, failure of INV fan failure of INV fan or failure of thermistor (THHS), Over current protection - inverter IPM problem or compressor lock - check inverter balance, ACCT sensor over current detection 34.5A peak or 16A rms is detected - check the compressor for failure, or possible inverter board failure, High pressure sensor fault - check the system pressure is >1 bar, check the operation of 63HS high pressure transducer, Low output current <1.5A rms whilst the inverter is in operation, Water supply cut-off (flow switch has been triggered) - check flow switch and wiring, High pressure fault - check water flow, possible high pressure sensor fault LEV fault, Compressor crank case temperature of 10°C or less for 40 minutes while compressor in operation - check for possible failure of fan motor, low pressure sensor, compressor shell thermistor, high pressure sensor, discharge thermistor (TH1 TH5), LEV or SV2, Low pressure protection low pressure below 6 bar within 30 sec of start up - possible failure of LP sensor, air inlet thermistor fault (TH4 TH8), suction temperature (TH2 TH6), LEV bypass check valve, Compressor shell bottom temperature exceeded 80°C detected whilst compressor running, Compressor shell thermistor faulty (TH3 TH6), LEV failure, Outside temperature thermistor fault - check TH9, Water inlet temperature - check TH10 main circuit, Water inlet temperature - check TH12 sub circuit, Outlet water temperature - check TH11 main circuit, Outlet water temperature - check TH12 sub circuit, Compressor shell temperature - check TH3 main circuit, Compressor shell temperature - check TH7 sub circuit, Discharge temperature - check TH1 main circuit, Discharge temperature - check TH5 sub circuit, Inlet temperature - check TH2 main circuit, Inlet temperature - check TH6 sub circuit, Air to refrigerant heat exchanger inlet temperature - check TH4 main circuit, Air to refrigerant heat exchanger inlet temperature - check TH8 sub circuit, Common return water when using multiple outdoors - check TH14, Common return water when using multiple outdoors - check TH15, High pressure sensor or high pressure fault - check 63HS sensor or 63H (hp switch), Low pressure sensor low or low pressure fault - check 63LS, Model setting error 2 - faulty Z21 resistor, Power supply frequency fault - power supply frequency is not 50Hz or 60Hz, Discharge temperature fault - 120°C detected during compressor operation - check water flow, pump, high pressure sensor fault or LEV fault, Power supply fault - check transmission power supply or if PCB faulty. 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