Carrier CAPRI-280 Operation And Service Manual page 23

ALARM TITLE
NO.
11 Coil Freeze
12 High Voltage
13 Low Voltage
14 Return Air Probe Failure
15 Suction Pressure
Transducer Failure
16 Discharge Pressure
Transducer Failure
17 Low Pressure Shutdown
21 High Discharge Pressure
22 Breaker Trip Alarm
23 Evaporator Fan Overload
24 Condenser Fan Overload
Table 3-2. Alarm Codes
CAUSE
Coil temperature is less
than 32F and the com-
pressor is operating.
The battery voltage is
greater than 32 volts.
The battery voltage is
less than 17 volts.
Return air temperature
sensor failure or wiring
defective.
Suction pressure trans-
ducer failure or wiring
defective.
Discharge pressure
transducer failure or wir-
ing defective.
Low suction pressure
switch open or wiring
defective.
High discharge pressure
switch open or wiring
defective.
A breaker on the relay
board has tripped or a
fan relay has failed.
Evaporator fan overload
jumper is open.
Condenser fan overload
jumper is open.
3-2
REMEDY
Check causes of coil
freezing. (Refer to sec-
tion 3.5.6)
Check, repair or replace
alternator.
Check, repair or replace
wiring or alternator.
Ensure all connectors
are plugged in. Check
sensor resistance or wir-
ing. Replace sensor or
repair wiring.
Ensure all connectors
are plugged in. Check
sensor voltage or wiring.
Replace sensor or repair
wiring.
Ensure all connectors
are plugged in. Check
sensor voltage or wiring.
Replace sensor or repair
wiring.
Check cause of low suc-
tion pressure. (Refer to
section 3.5.3)
Check discharge pres-
sure transducer reading,
wiring or cause of high
discharge pressure.
(Refer to section 3.5.3)
Check breakers for
tripped device. Repair
short and reset breaker.
Ensure connector is
plugged in or repair
wiring.
Ensure connector is
plugged in or repair
wiring.
CONTROLLER
RESPONSE
An alarm will be generated
and the system will shut-
down. The evaporator fans
will remain running while the
compressor is off.
The system is shut down
until the voltage returns to
normal levels.
The system is shut down
until the voltage returns to
normal levels.
All outputs except the evap-
orator fans will be de-ener-
gized.
Both unloaders are ener-
gized.
One unloader is energized.
The clutch is de-energized
for the minimum off time.
The evaporator fans will re-
main running during this pe-
riod. After the compressor
cycles off three times in 30
minutes all outputs will be
de-energized and the sys-
tem is locked out until the
power is cycled or the alarm
is reset through the keypad.
The clutch is de-energized
for the minimum off time.
The condenser and evapo-
rator fans will remain run-
ning during this period. Af-
ter the compressor cycles
off three times in 30 minutes
all outputs will be de-ener-
gized and the system is
locked out until the power is
cycled or the alarm is reset
through the keypad.
Alarm will be generated.
Alarm will be generated.
Alarm will be generated.
T-283