68
Wellea Monobloc
4.14
H8 Troubleshooting
4.14.1
Digital display output
Description
4.14.2
Pressure sensor error.
Wellea
Mono stops running.
Error code is displayed on refrigerant system main PCB and user interface.
Possible causes
4.14.3
Pressure sensor not connected properly or has malfunctioned.
Refrigerant system main PCB damaged.
Procedure
4.14.4
H8
No
High pressure sensor connection on
refrigerant system main PCB is loose
Yes
Ensure the sensor is connected properly
No
High pressure sensor has short-circuited
or failed
1
Yes
Replace the sensor
No
Replace refrigerant system main PCB
Notes:
1.
Measure the resistance among the three terminals of the pressure sensor. If the resistance is of the order of mega Ohms or infinite, the pressure sensor
has failed. The pressure sensor connection on each type of refrigerant system main PCB is labelled in Figures 4-2.2, 4-2.4 and 4-2.6 in Part 4, 2.3 “Main
PCBs for Refrigerant System, Inverter Modules and Filter Boards”. Refer also to Part 2, 1 “Layout of Functional Components”.
