Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 228

[7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ]
7-7-10 Error Code [5211-5214]
1. Error code definition
5211
Pump 1 suction pressure fault (HBC Pw1)
5212
Pump 1 discharge pressure fault (HBC Pw2)
5213
Pump 2 suction pressure fault (HBC Pw3)
5214
Pump 2 discharge pressure fault (HBC Pw4)
2. Error definition and error detection method
1) If a short-circuit (high-pressure intake) or an open-circuit (low-pressure intake) of the pressure sensor Pw1 or Pw2 is de-
tected while Pump 1 is in operation, the unit will come to an abnormal stop, and the error code 5211 or 5212 will appear.
2) If a short-circuit (high-pressure intake) or an open-circuit (low-pressure intake) of the pressure sensor Pw3 or Pw4 is de-
tected while Pump 2 is in operation, the unit will come to an abnormal stop, and the error code 5213 or 5214 will appear.
3. Cause, check method and remedy
(1) Pressure sensor fault
(2) Broken wire coating
(3) Missing connector pins, contact failure
(4) Disconnected wire
7-7-11 Error Code [5301] Detail Code 115
1. Error code definition
ACCT sensor fault (Detail code 115)
2. Error definition and error detection method
When the formula "output current < 1.8 Arms" remains satisfied for 10 seconds while the inverter is in operation.
3. Cause, check method and remedy
Cause
(1) Contact failure
(2) INV output phase loss
(3) ACCT sensor failure
(4) Compressor failure
(5) INV board failure
For inverter-related error codes, refer to the following page(s). [8-10 Troubleshooting Inverter Problems]
BS_07_M
Cause
Check the connector (CNCT2) on the INV board for proper connection.
Check the output wire for proper connection.
Refer to the following page(s).
[8-10-18 Simple Check on Inverter Circuit Components]
Refer to the following page(s).
[8-10-3 Checking the Compressor for Ground Fault and Coil Resistance Prob-
lems]
Replace the INV board if the problem persists after the operation is resumed.
Check method and remedy
Refer to [8-9-1 Pressure Sensor].
Check for broken wire coating.
Check for missing connector pins.
Check for disconnected or broken wire.
Check method and remedy
55
chapter 7 -