Carrier 58VCA - Manual (Page 11)

FAULT
CODE FAULT CODE DESCRIPTION CHECKLIST
12 or 44
Blower Calibration Lockout or
Blower Calibration Fault
□ Check for dirty air filter
□ Check for blocked return-air or supply-air grilles throughout your home.
□ Thrn electrical power supply OFF then back ON and set the thermostat
switch to “call” for heat.
14 or 34
Pilot Proving Lockout or
Pilot Proving Fault
□ Manual shut-off valve in gas supply pipe in open position (follow
startup procedure if you open gas line).
NOTE: TUrn off the electrical power supply and remove access doors
before continuing with this checklist.
□ Control knob on gas valve in ON position (follow startup procedures if
you must reset dial to ON).
42 Inducer Outside Valid Speed Range
□ Check to make sure that all PVC pipes leading into the combustion-air
intake and vent/exhaust are free from any cracks and sags. Also check
the combustion-air intake and vent/exhaust pipes on the outside of your
home for blockage.
Any Other
Fault 13, 21, 22, 23, 24, 31, 32, 33, 41, and
43 or either RED LED on continu­
ously. □ Call dealer for service.
No Fault
Signaled When Furnace Fails to Operate and
no Fault is Signaled
□ Check thermostat for proper temperature setting.
□ Thermostat switch on HEAT?
□ Check fuses and circuit breakers.
□ Blower door properly in place?
1. RED LED 1 on continuously means furnace is operating in emergency heat.
2. RED LED 2 on continuously means the microprocessor board has malfunctioned.
3. YEL LED 3 on continuously means furnace is operating in high heat.
4. GRN LED 4 on continuously means furnace is operating in low heat.
5. Alternate flashing of YEL and GRN LED’s indicates fault.
RED LED 2
MALFUNCTION
o
YEL
LED 3
HIGH HT '/J n
COUNT THE
NO. OF
FLASHES
I
(
4
)
THEN
COUNT THE
NO. OF
FLASHES
I
(2) = 42 FAULT
INDUCER OUTSIDE
VALID SPEED
RANGE
1 0