3-2
62-10630
Table 3-1 Alarm Indications -- Continued
ALARM
Description
CORRECTIVE ACTION
Reference
Paragraph
A09
Hot Gas Valve (HGS1)
hi h
d
Current draw of coil high or low (approx 1.6 amp)
----
(
)
high amp draw
Replace coil
4.14.1
A10
Quench Valve (BPV)
hi h
d
Current draw of coil high or low (approx 1.2 amp)
----
(
)
high amp draw
Replace coil
4.14.1
A11
Condenser Pressure Control
V l
(HGS2) hi h
d
Current draw of coil high or low (approx 1.6 amp)
----
Valve (HGS2) high amp draw
Replace coil
4.14.1
A12
Out–of–Range -- High Temper-
t
Unit out of range for 15 minutes
Verify Setting
g
g
p
ature
Verify cooling operation of unit
----
Hot gas solenoid open
4.14
A13
Out–of–Range Low Tempera-
t
Unit out of range for more than 15 minutes
Verify Setting
g
p
ture
Verify heating operation of unit
----
Heating option not active (Set Configuration)
2.9
A14
Defrost Cycle >45 minutes
Unit terminated defrost after 45 minutes
----
y
Verify HGS1/HGS2 valve operation
4.14
A15
Setpoint out of range
Operator entered invalid setpoint (outside of range)
2.6
p
g
Verify configuration settings
2.9
A16
Evaporator drain line heater
(DWR) malfunction
Replace heater
----
A17
Transformer/Rectifier Thermal
O
l d (RBT) O
Line voltage low
Correct
/
Overload (RBT) Open
Transformer winding open
Replace
High load on rectification system
Correct
A18
Electrical Heating Relay
(F t
)
Relay shorted
Replace
g
y
(Future)
Wiring shorted
Correct
A19
Multi--Temp Liquid Solenoid
Valve (high amps draw)
Valve coil shorted
Replace
Valve (high amps draw)
[Future]
Wiring shorted
Correct
A20
Low Pressure Switch (LPS)
O
(St db )
Unit undercharged
4.10.1
(
)
Open (Standby)
Liquid line filter--drier restricted
4.5
TXV strainer plugged with foreign material/ice.
4.6
TXV malfunction
4.16
Verify operation of evaporator fans
----
Failed switch
Replace
A21
Compressor Contactor (MC)
O
Ci
it
Contactor coil open circuit
Replace
p
(
)
Open Circuit
Wiring to coil open
Check
A22
Condenser Fan Motor (CFM)
O
Ci
it
Condenser fan motor defective
4.13
(
)
Open Circuit
Wiring to motor open
Check
A23
Hot Water Solenoid Valve
(HWV) O
Ci
it
Valve coil shorted
Replace
(HWV) Open Circuit
Wiring to coil open
Check
A24
Hot Gas Valve (HGS1) Open
Ci
it
Valve coil shorted
4.14.1
(
) p
Circuit
Wiring to coil open
Correct
A25
Quench Valve (BPV) Open
Ci
it
Valve coil shorted
Replace
(
) p
Circuit
Wiring to coil open
Correct
A26
Condenser Pressure Control
V l
(HGS2) O
Ci
it
Valve coil shorted
4.14.1
Valve (HGS2) Open Circuit
Wiring to coil open
Correct
A27
Evaporator Drain Line Heater
(DWR) O
Ci
it
Evaporator drain heater shorted
Replace
p
(DWR) Open Circuit
Verify wiring to heater
Correct
A28
Heating Relay (EHR) Open
Ci
it (F t
)
Relay open circuit
Replace
g
y (
) p
Circuit (Future)
Wiring to coil open
Correct