High-Pressure Sensor Fault (Outdoor Unit Hps/Bc Controller Ps1); Intermediate Pressure Sensor Fault (Bc Controller Ps3); Acct Sensor Fault (Detail Code 115) - Mitsubishi Electric PURY-(E)P200 Service Handbook

[ IX Troubleshooting ]
1. Error Code
5201

High-pressure sensor fault (Outdoor unit HPS/BC controller PS1)

5203

Intermediate pressure sensor fault (BC controller PS3)

2. Error definition and error detection method
When a pressure sensor reading of 4.06 MPa [589 psi] or above is detected, error codes "5201" and "5203" will appear.
The unit will continue its operation by using other sensors as a backup.
3. Cause, check method and remedy
(1) High pressure sensor failure
(2) Pressure drop due to refrigerant leak
(3) Torn wire coating
(4) A pin on the male connector is missing or contact failure
(5) Disconnected wire
(6) High pressure sensor input circuit failure on the control board
1. Error Code
5301

ACCT sensor fault (Detail code 115)

2. Error definition and error detection method
When the formula "output current < 1.5 Arms" remains satisfied for 10 seconds while the inverter is in operation.
3. Cause, check method and remedy
Cause
(1) Inverter open output phase
(2) Compressor failure
(3) INV board failure
Refer to section - 7 -"Inverter" under part [4] "Trouble shootiong principal parts" for error codes related to the
inverter.(page 271)
HWE07130
Cause
Check the output wiring connections.
Refer to 9 [4]-7-(2)[2].(page 273)
Refer to 9 [4]-7-(2)[1], [3], [4].(page 273)
- 206 -
Check method and remedy
Refer to the page on the troubleshooting of
the high pressure sensor.
(9 [4] -1-(page 251))
Check method and remedy
GB