Carrier 40 Operation & Service Manual page 26

Table 2-2 Alarm Messages - - Continued
Defrost cycle > 45 minutes
Setpoint adjusted out of the range
--29°C/+30°C
Evaporator drain line heater (DWR) mal-
function
Transformer/Rectifier thermal overload
(RBT) open
Control fault, electric heat (Future)
Control fault, multi--temp liquid line valve
(Future)
Low pressure switch (LPS) open
(Standby)
Compressor contactor (MC) open circuit
Condenser fan motor (CFM) open circuit
Hot water solenoid valve (HWV) open
circuit
Hot gas valve (HGS1) open circuit
Quench valve (BPV) open circuit
Condenser Pressure Control Valve
(HGS2) open circuit
Evaporator drain line heater (DWR)
open circuit
Relay fault, electric heat (Future)
2-7 62-10630