Mitsubishi Electric MXZ error codes
Codes
- HAFIZA-7-6LED code[MXZ-6D] PC kartı sıcaklığı — Lamba: Çalışma göstergesi üst veya sol lambası (iç ünite): 7 kez yanıp söner; LED1 (kırmızı, dış ünite PC kartı): 4 kez yanıp söner, 2,5 sn söner; LED2 (sarı, dış ünite PC kartı): Yanmaz
- HAFIZA-8LED code[MXZ-2D] Dış fan motoru — Lamba: Çalışma göstergesi üst veya sol lambası (iç ünite): 8 kez yanıp söner; LED1 (kırmızı, dış ünite PC kartı): Yanar; LED2 (sarı, dış ünite PC kartı): Yanar
- HAFIZA-8-2LED code[MXZ-3D/4D/5D] Dış fan motoru — Lamba: Çalışma göstergesi üst veya sol lambası (iç ünite): 8 kez yanıp söner; LED1 (kırmızı, dış ünite PC kartı): Yanar; LED2 (sarı, dış ünite PC kartı): Yanar
- HAFIZA-8-3LED code[MXZ-6D] Dış fan motoru — Lamba: Çalışma göstergesi üst veya sol lambası (iç ünite): 8 kez yanıp söner; LED1 (kırmızı, dış ünite PC kartı): Yanar; LED2 (sarı, dış ünite PC kartı): Yanar
- HAFIZA-9LED code[MXZ-2D] Kalıcı bellek (nonvolatile) verisi — Lamba: Çalışma göstergesi üst veya sol lambası (iç ünite): 9 kez yanıp söner; LED1 (kırmızı, dış ünite PC kartı): Yanar; LED2 (sarı, dış ünite PC kartı): 5 kez yanıp söner, 2,5 sn söner
- HAFIZA-9-2LED code[MXZ-2D] Güç modülü — Lamba: Çalışma göstergesi üst veya sol lambası (iç ünite): 9 kez yanıp söner; LED1 (kırmızı, dış ünite PC kartı): 7 kez yanıp söner, 2,5 sn söner; LED2 (sarı, dış ünite PC kartı): Yanmaz
- HAFIZA-9-3LED code(MXZ-6C) Kalıcı (nonvolatile) bellek verisi — Lamba: Çalışma lambası (üst veya sol) (iç ünite): 9 kez yanıp söner; LED1 (kırmızı): Yanıyor; LED2 (sarı): 5 kez yanıp söner, 2,5 sn söner (her yanış 0,5 sn)
- HAFIZA-9-4LED code[MXZ-6D] Dış ünite kontrol sistemi — Lamba: Çalışma göstergesi üst veya sol lambası (iç ünite): 9 kez yanıp söner; LED1 (kırmızı, dış ünite PC kartı): Yanar; LED2 (sarı, dış ünite PC kartı): 5 kez yanıp söner, 2,5 sn söner
- PAError codeForced compressor stop. (Overlap malfunction of drain pump in indoor unit and linear expansion valve in branch box.) When condition of the outdoor unit is forcefully stopped, which means the drain sensor detects continuously to go under water 5 times, and also detects "[liquid pipe temperature - suction temperature] [ – 10deg" for 30 minutes continuously, the indoor unit and indoor units in same refrigerant system which operates in cooling, heating or dry mode stops abnormally. Also, the outdoor
- U1Error code(1) High-pressure switch (63H) operated Abnormal if high-pressure switch 63H operated ( ) during compressor operation. w 4.15 MPa w 63H: High-pressure switch (2) High pressure (High - pressure sensor 63HS detect) When high-pressure sensor 1 detects 4.31MPa or more (or over 4.15MPa for 3 minutes) (1st detection) during the compressor operation, the compressor stops and restarts operation in 3 minutes. When the sensor detects 4.31MPa or 2 more (or over 4.15MPa for 3 minutes) again (2nd detection)
- U2Error code(1) High discharging temperature Abnormal if compressor temperature 125: thermistor (TH4) exceeds or 110: continuously for 5 minutes. Abnormal if pressure detected by high pressure sensor and converted to saturation temperature exceeds 40: during defrosting and compressor temperature 110:. thermistor (TH4) exceeds (2) Refrigerant shortage abnormality When the conditions of below detecting 1 mode 1 or 2 are satisfied (1st detection) during the compressor operation, the compressor stops and restar
- U3Error code1. Compressor is operating. 2. When cooling, discharge superheat is 80: or more. When heating, discharge superheat is 90 or more. : High pressure sensor is below about 2.32MPa. 2 When the conditions of detecting mode 1 and 2 are satisfied again (2nd detection) within 30 minutes since the compressor has stopped and restarts operation in 3 minutes. 3 When the conditions of detecting mode 1 and 2 are satisfied again (3rd detection) within 30 minutes since the compressor has stopped, it stops abnorm
- U4Error code(TH3:5105) (TH7:5106) (TH8:5110) (63HS:5201) ( ) TH-A~E :5131: thermistors (TH3, TH7, and TH8) and branch box’s thermistors (TH-A~E) Abnormal if open or short circuit is detected while the compressor is operating. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS") Open/short circuit in the branch box thermistor. (TH
- U5Error code2 When the detected pressure is 1MPa or less at just before of restarting, the compressor stops abnormally. In this time, <U4> is displayed. 3 For 3 minutes after the compressor stops, the unit delays to abnormal stop. Then, the outdoor unit address No. 4 For 3 minutes after starting compressor, for defrosting or for 3 minutes after recovery from defrosting, abnormality is not determined as abnormality. Abnormal temperatu
- U6Error codeAbnormality of power module Check abnormality by driving power module in case overcurrent is detected. (UF or UP error condition)
- U7Error code(1) Too low superheat due to low discharge temperature Abnormal if discharge superheat is continuously detected -15: or less even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes. (2) Erroneous connection of refrigerant pipes or the connecting wires Consider the stopping indoor unit abnormal if condenser/evaporator temperature thermistor (TH5 or RT12) detects -5: or below continuously for 5 minutes during a compressor’s operation in cooling mo
- U8Error codeOutdoor fan motor The outdoor fan motor is considered to be abnormal if the rotational frequency of fan motor is abnormal when detected during operation. Fan motor rotational frequency is abnormal if; • 100 rpm or below detected continuously 26: for 15 seconds at or more outside air temperature • 50 rpm or below or 1500 rpm or more detected continuously for 1 minute.
- U9Error codeTo find out the details about U9 error, Detailed Refer to "8-8. FUNCTION OF SWITCHES, codes Overvoltage error • Increase in DC bus voltage to; V model: 400V Y model: 760V 01 Undervoltage error • Instantaneous decrease in DC bus voltage to; V model: 200V Y model: 350V 02 | Detailed Input current sensor error/ codes L1-phase open error • Decrease in input current through outdoor unit to 0.1A only if operation frequency is more than or equal to 40Hz or compressor current is more than or equal to 6A. 04 Abnormal power synchronous signal • No input of power synchronous signal to power circuit board • Power synchronous signal of 44 Hz or less, or 65 Hz or 08 more is detected on power circuit board. PFC/IGBT error (Undervoltage) • When Compressor is running, 20 DC bus v
- UFError codeCompressor overcurrent interruption (When compressor locked) Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating.
- UHError codeCurrent sensor error Abnormal if current sensor detects - 1.5A to 1.5A during compressor operation. (This error is ignored in case of test run mode.) Abnormal if input current exceeds 38 A or 34A continuously 10 seconds. (Current sensor on noise filter board detects input current)
- ULError codeLow pressure (63L operated) Abnormal if 63L is operated (under0.03MPa) during compressor operation. 63L: Low-pressure switch
- UPError codeCompressor overcurrent interruption Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds.