ERS EMCH-10W/1, Installation And User Manual

Page: 180 / 190

18.5.10 P5
When condenser temperature is over 62
o
C the system will display P5 protection, the ODUs will standby.
When the condenser temperature goes back to normal range, P5 protection finishes and normal operation
resumes.
P5: Condenser temperature protection
Check whether the condenser
temperature is higher than
62°C
Check whether the condenser
temperature sensor is incorrectly
connected or disabled
The ambient temperature is
higher than 48
℃
No
Clean the heat exchanger
Stop the unit and wait for ambient
temperature goes down
No
Replace PCB
Reconnect or replace condenser
temperature sensor
Yes
Yes
Yes
No
Yes
No
No
PCB is damaged
Replace PCB
Low heat exchange efficiency, causes may include
dirty heat exchanger, dirty plate type heat
exchanger, abnormal fan operation, water pump
error, too closed outdoors installation, etc.
Inspect the system and fix the
error
The refrigerant pipe is block, caused by
crushed or bent pipe, blocked EXV valve,
blocked filter, etc.
Inspect the system and fix
the error
Yes
No
85
V.2