Error Code [5202, 5203] - Mitsubishi Electric PUHY-M200YNW-A1 Service Handbook

[7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ]
7-7-8 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)
7-7-9

Error Code [5202, 5203]

1. Error code definition
5202, 5203
Water pressure sensor fault (Hydro unit Pw1, Pw2)
2. Error definition and error detection method
When a pressure sensor reading of Pw1, Pw2 < -50kPa or 1050kPa ≤ Pw1, Pw2 is detected, error codes "5202" and "5203"
will appear.
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
BS_07_E
Cause
Cause
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.
Check method and remedy
Refer to the following page(s). [8-9-1 Pres-
sure Sensor]
55
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