Alarm Code #452
Model CPE52, 53, 14, 15, 15V, 16
Failure Disconnection or Internal thermostat
actuation of Evaporator fan motor ( Hi : High speed )
Countermeasure
<<
Cause -(2) >>
Defective
Evaporator fan ( Hi ) relay ( FRH )
<
Check > ( Refer to Page F-31 )
Operate
the evaporator fan motor ( Hi ) under the test mode, and check the voltage on
FRH relay coil.
Check
also the coil current value on AC 24V circuit with a clamp meter.
<
Action >
• In
case the coil voltage is normal and FRH does not work : Replace FRH relay
• In
case AC coil current is out of the following range : Replace FRH relay
•
CPE52, 53, 15 : approx. 0.1 – 1A ( at AC 440V )
•
CPE14, 15V, 16 : approx. 0.1 – 2A ( at AC 440V )
• In case no coil
voltage is detected : Replace PCB-C board.
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