Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 227

[7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ]
7-7-8 Error Code [5201, 5203]
1. Error code definition
5201
High-pressure sensor fault (HBC PS1)
5203
Intermediate pressure sensor fault (HBC PS3)
2. Error definition and error detection method
When a pressure sensor reading of 4.06 MPa [589 psi] or above or 0.098Mpa[142psi] or below is detected, error codes "5201"
or "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) Torn wire coating
(3) A pin on the male connector is missing or contact failure
(4) Disconnected wire
(5) High pressure sensor input circuit failure on the control board
7-7-9 Error Code [5202]
1. Error code definition
5202
Water pressure sensor fault (indoor unit)
2. Error definition and error detection method
When a pressure sensor reading of 1.05 MPa [153 psi] or above OR -0.05 MPa [7.3 psi] or below is detected, error code
"5202" will appear.
3. Cause, check method and remedy
(1) The water outlet pressure sensor is open- or short-circuited. (Re-
gardless of the indoor unit operation status)
54
- chapter 7
Cause
Cause
Check method and remedy
Refer to the following page(s). [8-5-1 Com-
paring the High-Pressure Sensor Measure-
ment and Gauge Pressure]
Check for damaged wire coating
Check whether a connector pin is missing
Check for disconnected or broken wire
Check the temperature detected by the sen-
sor from the LED monitor. If the temperature
is significantly different from the actual tem-
perature, replace the control board.
Check method and remedy
1) Check that the water outlet pressure sensor
is connected.
Reset the indoor unit error.
2) Check the water outlet pressure sensor wir-
ing for breakage.
Reset the indoor unit error.
BS_07_M