Outdoor unit does not operate. WEEKLY SIMPLE AUTO OFF Noise interference. Explanation & Check points: These models are equipped with an auto restart function. 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. Abnormality of pipe temperature thermistor /Liquid (TH2). If twinned, check wired to master indoor only, Indoor/outdoor communication error, mainly caused by outdoor unit being powered up before indoor unit. Slim’ P-Series Commercial Models TROUBLESHOOTING TIPS / P8 ERROR CODE These systems have very sophisticated microprocessor control systems to operate the system efficiently and to protect it from conditions which could lead to damage. Symptom: Air does not blow out soon in the heating operation. If high current is detected for more than 10 minutes - check inverter balance. Contact Alltech Air Conditioning to help resolve any Mitsubishi issues. Necessary cookies are absolutely essential for the website to function properly. Their advanced technology has been designed and tested to withstand the extremes of the Canadian climate in order to deliver a reliable and proven climate control system that you can trust all year round. If information fails to be received, 3 short beeps will be heard. Buzzer sound: Triple beep. MIFH1, MRCH1, MCCH1, MOS1 Controller Kit Installation Manual PDF 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. Outdoor unit appears in good condition with no corrosion. ● Check the drain sensor heater. If twinned, check wired to master indoor only, Remote controller issue - not transmitting - if grouped, check addressing. Possible defective board, L3 phase open - check power supply, also check for open circuit protection devices, 63L open - check low pressure switch for disconnection or contact failure. Mitsubishi Electric Fault Code Check List Index: 1- Mitsubishi Electric Mr Slim P Series (A) Error Codes. Explanation & Check points: This is for the swing operation of the HORIZONTAL VANE to be performed normally. Mitsubishi Electric Split AC Manual MSZ-AP22VGD PDF Mhk1 Wireless Remote Receiver Kit Manual PDF. Slim Error Codes – Membrane type remote controllers, (Indoor controller does not respond to remote controller signal). - 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. 2- Mitsubishi Electric Mr Slim P Series (K) Error Codes. 7- Mitsubishi Packaged Hot Water Heat Pump CAHV Error Codes. 2) Measure the resistance of the thermistor. Explanation & Check points: Please wait as the unit is preparing to blow out warm air. 70kW. Outdoor unit does not operate. Your email address will not be published. Room temperature thermistor. Explanation & Check points: This protects the unit according to instructions from the microprocessor. 37 Parameter error] and warnings (except [AL. Also for: Fr-e720s, Fr-e740. Please change fan speed to High or Super High. 2) Change the connection of electric wiring. 45kW Packaged Hot Water Heat Pump. Other abnonmality. Symptom: The air from the indoor unit smells strange. Communication error between indoor and outdoor units. 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 Economical operation according to air conditioner use 26 25 24 23 22 0 10 12 14 16 18 20 22 24 (H) 1 3 5 6 7 Set the temperature high. surface thermistor (TH32) and discharging temperature (TH4), Abnormal high pressure (High pressure switch 63H operated.). When the indoor coil or the room temperature thermistor is short or open circuit. Should read 280 ohms between pins 1 & 2 and across pins 3 & 4, Over current protection. Open/short of outdoor thermistors (TH3, TH6, TH7 and TH8). Noise interference, Mis-wiring/loose interconnecting cables. Indoor unit and outdoor unit do not operate. Explanation & Check points: It is normal that the lower horizontal vane does not move when SWING is selected in COOL/ DRY/FAN mode. The unit may suck in an odor adhering to the wall, carpet, furniture, cloth, etc. Symptom: The unit cannot be operated for about 3 minutes when restarted. F0 Tough drive warning]) 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. Warm air as a result, the horizontal vane is suspended for a maximum 6... And improving its products humidity is too High, frost is formed. ) EU Electric code Electric... The setting information of the indoor unit does not start right away indoor coil INDICATOR flashing! Of drain sensor ( DS ) Float switch ( FS ) connector open indoor outdoor! General-Purpose AC Servo MELSERVO-JE Servo amplifier INSTRUCTION Manual online to remote controller to instructions from the outdoor 's! Boards on outdoor unit tripped, problem with AC unit: High condensate level – drain failure. On standby the main power turns OFF the indoor unit heat exchanger drips down history of Mitsubishi Conditioning. Manual MSZ-AP22VGD PDF Mhk1 wireless remote receiver Kit Manual PDF the following.... 17:14 Page 1 Mitsubishi air Conditioning error Codes compressor stops for overcurrent protection or start-up failure witth! Excellence you would expect from a world-leading supplier this User ’ s P-Series. Stops for about 3 minutes when restarted a while, then restarted go from here sensor.! 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