EAS ELECTRIC EMCH Serie Manual De Instalación Y Manual De Usuario página 180

18.5.10 P5
When condenser temperature is over 62
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
Yes
The ambient temperature is
higher than 48℃
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.
The refrigerant pipe is block, caused by
crushed or bent pipe, blocked EXV valve,
blocked filter, etc.
No
PCB is damaged
o
C the system will display P5 protection, the ODUs will standby.
No
Check whether the condenser
temperature sensor is incorrectly
connected or disabled
Reconnect or replace condenser
temperature sensor
Yes
No
No
No
Yes
Stop the unit and wait for ambient
temperature goes down
Yes
Inspect the system and fix the
error
Yes
Inspect the system and fix
the error
Replace PCB
No
Replace PCB
V.2
85