Bryant Plus 90i - 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.
□ Turn 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 start-up
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 start-up 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 in¬
take 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 contin¬
uously.
□ 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
YEL xl/
LED 3 _ “
HIGH HT j\
COUNT THE
NO. OF
FLASHES
\
(4)
o
RED LED 1
EMER HT
THEN
COUNT THE
NO. OF
FLASHES
I
(2) = 42 FAULT
INDUCER OUTSIDE
VALID SPEED
RANGE
A87348
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