Carrier 40 - Page 28

3-2
62-10630
Table 3 -1 Alarm Indications -- Continued
ALARM
Description CORRECTIVE ACTION
Reference
Paragraph
A09 Hot Gas Valve (HGS1)
h
i
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)
h
i
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
(
H
G
S
2
)
h
i
h
d
Current draw of coil high or low (approx 1.6 amp) -- --
V
alve (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
(
R
B
T
)
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
V
a
l
v
e
(
h
i
g
h
a
m
p
s
d
r
a
w
)
Valve coil shorted Replace
V
a
l
ve
(
h
i
g
h
amps
d
raw
)
[Future]
Wiring shorted Correct
A20 Low Pressure Switch (LPS)
O
(
S
t
d
b
)
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
C
i
i
t
Contactor coil open circuit Replace
p
(
)
Open Circuit
Wiring to coil open Check
A22 Condenser Fan Motor (CFM)
O
C
i
i
t
Condenser fan motor defective 4.13
(
)
Open Circuit
Wiring to motor open Check
A23 Hot Water Solenoid Valve
(
H
W
V
)
O
C
i
i
t
Valve coil shorted Replace
(H
W
V
) Open Circuit
Wiring to coil open Check
A24 Hot Gas Valve (HGS1) Open
C
i
i
t
Valve coil shorted 4.14.1
(
)
p
Circuit
Wiring to coil open Correct
A25 Quench Valve (BPV) Open
C
i
i
t
Valve coil shorted Replace
(
)
p
Circuit
Wiring to coil open Correct
A26 Condenser Pressure Control
V
l
(
H
G
S
2
)
O
C
i
i
t
Valve coil shorted 4.14.1
V
alve (HGS2) Open Circuit
Wiring to coil open Correct
A27 Evaporator Drain Line Heater
(
D
W
R
)
O
C
i
i
t
Evaporator drain heater shorted Replace
p
(D
W
R) Open Circuit
Verify wiring to heater Correct
A28 Heating Relay (EHR) Open
C
i
i
t
(
F
t
)
Relay open circuit Replace
g
y
(
)
p
Circuit (Future)
Wiring to coil open Correct