Reduced airflow through heat sink, Over current protection. 45kW Packaged Hot Water Heat Pump. ... Mitsubishi Electric is constantly developing and improving its products. Discharge thermistor, Low pressure/temperature fault - check thermistors (TH2, TH3, TH4), gas charge, indoor fan, heat exchanger and filter, Preliminary heat exchanger gas temperature sensor fault - check thermistors 10a and 10b, Low pressure fault (63L operation) low pressure sensor sensing less than 1 bar immediately before starting, High pressure fault - check pressure in system for more than 29 bar (R407c) 38 bar (R410A). Outdoor unit appears in good condition with no corrosion. 3- Mitsubishi Multi City VRF AC Error Codes. Fault Code Check List FAULT CODE COVER&TABS_COVERS 26/09/2011 17:14 Page 1 Check LEV operations. Code P1 - Malfunction of the Mitsubishi Electric temperature sensor (TH1). Compressor lock - check inverter balance, Inverter cooling fan problem - if high static fan is used then check that SW3-9 is on, Preliminary inverter heat sink overheat protection. Open/short of outdoor thermistors (TH3, TH6, TH7 and TH8). VRF Systems can run numerous indoor units connected to one outdoor unit, making them suitablefor medium to large buildings that demand high performance with optimum efficiency. Indoor unit does not support wireless receiver. Normal resistance should be 82Ω. Some MITSUBISHI Forklift Truck Brochures PDF are above the page. Abnormality of pipe temperature thermistor/Condenser-Evaporator. FAULT CODES FOR HVAC, Refrigerators, Conditione System, Washing Machines, Coffee Machine and other Frequency Inverter. Can be combined to max. Indoor fan motor. Compressor and inverter, Low inverter board BUS voltage. ● Check the drain sensor heater. Symptom: The swing operation of the HORIZONTAL VANE is suspended for a while, then restarted. Indoor unit and outdoor unit do not operate. When the indoor coil or the room temperature thermistor is short or open circuit. - Connector for the outdoor unit's protection device is not connected. ), E0 E3 Remote controller transmission error, E1 E2 Remote controller control board error, E9  Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit), U3, U4  Open/short of outdoor unit thermistors, UF Compressor overcurrent interruption (When compressor locked), U2  Abnormal high discharging temperature/49C worked/insufficient refrigerant, U1 Ud Abnormal high pressure (63H worked)/Overheating safeguard operation, U6  Compressor overcurrent interruption/Abnormal of power module, U7 Abnormality of super heat due to low discharge temperature. Outdoor unit does not operate. When the breaker is turned on, the horizontal vanes’ position will be reset in about a minute. After Japan’s capitulation in 1945, the holding was divided into dozens of small companies. | View our. When a particular error of an air conditioner is detected, light-emitting diodes blink in a certain order, which corresponds with a particular error. We also use third-party cookies that help us analyze and understand how you use this website. Available in one size: PWFY-P100VM-E-BU (12.5kW heating) which is modular to allow creation of larger solutions. Title: MR-JE-_A SERVO AMPLIFIER INSTRUCTION MANUAL Author: Mitsubishi Electric Corporation Subject: SH-030128-J Keywords: MR-JE-A Created Date: 7/27/2013 11:58:53 AM 3) Short-circuit between 1 and ➁ of CN40 and attach CN40 to the following units. ), 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. Split-Systems are smaller and typically consist of oneoutdoor unit running up to eight indoor units, making themideal for small to medium sized applications such as retailunits and small offices. 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. If high current is detected for more than 10 minutes - check inverter balance. P2 P9 Pipe (Liquid or 2-phase pipe) sensor error, E6 E7 Indoor/outdoor unit communication error, P6  Freezing/Overheating safeguard operation, EE  Communication error between indoor and outdoor units, E4  Remote controller signal receiving error, Fb  Indoor unit control system error (memory error, etc. Sanitary water heating has suitable applications in: hotels and motels, apartments, commercial kitchens and laundries, office buildings, food processing industry, heat recovery from air conditioning systems into sanitary water storage, and direct sanitary water heating is also possible. Necessary cookies are absolutely essential for the website to function properly. Receiving error ) other Electric appliances being pressed soon in the drain in... If information fails to be performed normally Admin Created Date: 9/23/2016 10:56:00 AM Mitsubishi Electric fault code COVER TABS_COVERS! For products up to 10-15 years old to service our long standing and new customers, MRCH1,,... 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