Symptom: The swing operation of the HORIZONTAL VANE is suspended for a while, then restarted. If there’s something stuck in the air conditioner fan that prevents it from spinning. 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. Indoor unit and outdoor unit do not operate. 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. The day hat it died on me, the car was running very rough, I could... CarGurus has thousands of nationwide listings and the tools to find you a great deal. This category only includes cookies that ensures basic functionalities and security features of the website. Your email address will not be published. -Remote controller wire short. TH2 faulty or not mounted correctly, Reverse phase on mains supply - change phases around, check for potential board problem, Component open circuit - check CH, 52C, 21S4, SV, 63H and 26C for open circuit or disconnected, Outdoor coil thermister is open or short circuit may be disconnected or outdoor board fault, 63H high pressure switch open - investigate high pressure causes, 63H switch disconnected, 51CM overcurrent relay open - compressor locked or pulling too much current - check power supply, 26C thermal switch open - check if refrigerant level low or if 26C is disconnected, Overheat protection - coil temp has exceeded 67°C - reduced airflow through condenser - check for fan motor problem or thermistor problem, Input circuit of outdoor board - replace the outdoor board, Comms fault between boards - check inverter error detail for which 2 boards, check transformer, bus voltage and inter-connecting cables, High compressor discharge temperature. My total out-of-pocket cost for replacing the fo… Pity Mitsubishi shops do not read their own manuals. If the system’s temperature drop is lower than 18 degrees for old systems, you might be facing a problem with the level of the refrigerant. Transmit the setting information of the weekly timer to the indoor unit again. It is possible to try and fix this on your own if it is only a minor problem. This would indicate a blockage as well. Operation Led: No lit. Mr. Please change fan speed to High or Super High. Your email address will not be published. by | Jan 20, 2021 | Uncategorized | 0 comments | Jan 20, 2021 | Uncategorized | 0 comments As a safety function, the system will cut power to the compressor clutch to disable the AC if it sees any one of several conditions met: AC pressure gets too high AC … Check the blinking pattern of the LED on the inverter P.C. due to change in temperature. ), 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. the ac was working and now the green light is blinking ,but then you push the botton and it stay green and it sounds that the compressue coms on and then in about 4 min the light starts blinking again ... 2003 Mitsubishi Outlander: air conditioner..blowing cold air. Abnormality of power module. In the heating operation, if the airfl ow temperature is too low or when defrosting is being done, the horizontal vane is automatically set to horizontal position. board. - 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. OK, so my 95 Magna wasn't sparking from the Coil, so I went and replaced it. 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 of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Could u list some of the parts that have been replaced. my 2000 Magna has just died -- i think maybe it's the coil? Open/short of outdoor thermistors (TH3, TH6, TH7 and TH8). Still not sparking. Are the horizontal vane and the vertical vane installed correctly? Can be combined to max. Reduced airflow through heat sink. Less than 289VdcDC is detected. found it guys -bad connection on wire into compressor (speed sensor?) Ensure information is successfully received. Compressor and inverter, Low inverter board BUS voltage. In the heating operation, the defrosting operation makes ice forming on the outdoor unit melt and drip down. error details, Temperature sensor fault - check CN30 for humidity sensor, Loose float switch connector - check switch, check CN4F on indoor unit, TB7 transmission line communication error - check for voltage abnormality/short, Transmission processor hardware error - check for noise/short on M-Net cable, Repeat address fault - two or more units are assigned the same address - correct the repeated address, Polarity setting error - no voltage or short circuit on the m-net transmission line, Hardware error of transmission processor. Out door control system. If within range for at least 30 minutes and problem persists, replace Remote Controller. Since this is completed in max.10 minutes, please wait. Get the pressures checked. indoor then outdoor, 51CM connector open - check thermal relay for disconnection or contact failure. Slim P-Series ductless heat pumps and air conditioners are compact yet powerful, offering unrivaled energy efficiency and design flexibility. How To Solve Aircon Light Blinking Problem ... Air Conditioner Light Blinking And Problem Solving Techniques All rights reserved. Room temperature thermistor. Outdoor unit does not operate. Symptom: The operation stops for about 10 minutes in the heating operation. Reduced airflow through heat sink. If your air conditioning unit has shut off and is blowing hot air, you can try to switch the circuit breaker off. 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. Is the fan or heat exchanger of the indoor unit clean? Slim ductless system will run more efficiently than a conventional unit, saving you from rising energy costs. Symptom: When heating operation is selected, operation does not start right away. One of the key reasons that your air conditioner start displaying the flashing green light blinking is because there’s something issue with the outside system. surface thermistor (TH32) and discharging temperature (TH4), Abnormal high pressure (High pressure switch 63H operated.). The same is true in the emergency cooling operation. Pity Mitsubishi shops do not read their own manuals. Any help appreciated! The unit has failed to initialise after power up. Explanation & Check points: Please wait as the unit is preparing to blow out warm air.