Error Code Definitions And Solutions: Codes [1000 - 1999]; Error Code [1102] - Mitsubishi Electric PURY-M200YNW-A1 Service Handbook

[7-3 Error Code Definitions and Solutions: Codes [1000 - 1999] ]

7-3

Error Code Definitions and Solutions: Codes [1000 - 1999]

7-3-1

Error Code [1102]

1. Error code definition
Discharge temperature fault
2. Error definition and error detection method
1) If the discharge temperature of 120 °C [248°F] or more is detected during the operation (the first detection), the outdoor unit
stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes automatically.
2) If the discharge temperature of 120° C [248°F] or more is detected again (the second detection) within 30 minutes after the
second stop of the outdoor unit described above, the mode will be changed to 3 - minute restart mode, then the outdoor unit
will restart in 3 minutes.
3) If the discharge temperature of 120°C [248°F] or more is detected (the third detection) within 30 minutes after the stop of the
outdoor unit described above (regardless of the first or the second stop), the outdoor unit will make an error stop, and the error
code "1102" will be displayed.
4) If the discharge temperature of 120°C [248°F] or more is detected more than 30 minutes after the previous stop of the outdoor
unit, the detection is regarded as the first detection, and the operation described in step 1 above will start.
5) For 30 minutes after the stop (the first stop or the second stop) of the outdoor unit, preliminary errors will be displayed on the
LED display.
3. Cause, check method and remedy
(1) Gas leak, gas shortage
(2) Overload operation
(3) HBC LEV malfunction
Cooling only: LEV1, 2, and 3
Cooling main: LEV1, 2, and 3
Heating only or heating main: LEV1, 2, and 3
Defrost: LEV1, 2, and 3
(4) HBC SV1, 21S4Ma, and 21S4Mb malfunc-
tion → Cooling only or defrost
(5) HBC SV1, 21S4Ma, and 21S4Mb malfunc-
tion → Cooling only or cooling main
(6) HBC SV1, 21S4Ma, and 21S4Mb malfunc-
tion → Heating only or heating main
(7) Actuation failure in the four-way valve (21S4a
or 21S4b) or the expansion valve (LEV2a or
LEV2b)
→heating only, heating main
(8) Port address setting error.
(9) Refrigerant service valve actuation failure
(10) Outdoor fan (including fan parts) failure, mo-
tor failure, or fan controller malfunction
Rise in discharge temp. by low pressure
drawing for (3) - (11).
(11) Gas leak between low and high pressures
(4-way valve failure, Compressor failure, So-
lenoid valve (SV1a) failure)
(12) Thermistor failure
(TH4)
(13) Input circuit failure on the controller board
thermistor
(14) Outdoor unit LEV4 valve actuation failure
BS_07_M
Cause Check method and remedy
Refer to the following page(s). [6-3 Evaluating and Adjusting
Refrigerant Charge]
Check operating conditions and operation status of indoor/
outdoor units.
Perform a heating operation and check the operation.
Cooling: HBC LEV1, 2, and 3
SV1
21S4Ma and 21S4Mb
Heating: HBC LEV1, 2, and 3
SV1
21S4Ma and 21S4Mb
Refer to the following page(s). [8-8 Troubleshooting LEV,
FCV Problems]
Confirm the port address of the indoor unit.
Confirm that the refrigerant service valve is fully open.
Check the fan on the outdoor unit.
Refer to the following page(s). [8-7 Troubleshooting Outdoor
Unit Fan Problems]
Perform a cooling or heating operation and check the opera-
tion.
Refer to the following page(s). [7-7-3 Error Code
[5103,5104,5105,5107,5115]]
Check the inlet air temperature on the LED monitor.
Refer to the following page(s). [8-8 Troubleshooting LEV,
FCV Problems]
11
chapter 7 -