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[ IX Troubleshooting ]
- 221 -
HWE0803A GB
1. Error Code
High-pressure sensor fault (Outdoor unit HPS/BC controller PS1)
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
5201
5203
Cause Check method and remedy
(1) High pressure sensor failure Refer to the page on the troubleshooting of
the high pressure sensor.
(IX [4] -1-(page 273))
(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