Whirlpool WPIO-369B Instruction Manual download pdf (Page 34)

34

■ No furnace

operation.

■ Integrated

control module

LED display

provides “E5”

error code.

E5

■ Open fuse. ■ Short in low voltage

wiring.

■ Locate and correct

short in low voltage

wiring.

■ Turn off power prior to

repair.

■ Replace fuse with 3A

automotive fuse.

■ Furnace not

operating.

■ Integrated

control module

LED display

provides “E6”

error code.

E6

■ Flame sense

microamp signal

is low.

■ Flame sensor is

coated/oxidized.

■ Flame sensor

incorrectly

positioned in

burner flame.

■ Lazy burner flame

due to improper

gas pressure or

combustion air.

■ Sand flame sensor if

coated/oxidized.

■ Inspect for proper

sensor alignment.

■ Check inlet air piping

for blockage, proper

length, elbows and

termination.

■ Compare current gas

pressure to rating plate

info. Adjust as needed.

■ Turn off power prior to

repair.

■ Sand flame sensor

with emery cloth.

■ See “Vent/Flue Pipe”

section for piping

details.

■ See rating plate for

proper gas pressure.

■ Furnace

operating on

low stage gas

with high stage

induced draft

blower

■ High stage

circulator

blower

(temperature, of

conditioned air,

lower than

typical).

■ Integrated

control module

LED display

provides “E7”

error code.

E7

■ Problem with

igniter circuit.

■ Improperly

connected igniter.

■ Shorted igniter.

■ Poor unit ground.

■ Igniter relay fault on

integrated control

module.

■ Check and correct

wiring from integrated

control module to

igniter.

■ Replace shorted

igniter.

■ Check and correct

furnace ground wiring.

■ Check igniter output

from control. Replace,

if necessary.

■ Turn off power prior to

repair.

■ Replace igniter with

correct replacement

part.

■ Replace control with

correct replacement

part.

■ Furnace fails to

operate on high

stage. Furnace

operates

normally on low

stage.

■ Integrated

control module

LED display

provides “E8”

error code.

E8

■ High-stage

pressure switch

circuit is closed

at start of

heating cycle.

■ Induced draft

blower is

operating.

■ Furnace is

operating on

low stage only.

■ High-stage

pressure switch

contacts sticking.

■ Shorts in pressure

switch circuit

wiring.

■ Replace high-stage

pressure switch.

■ Repair short in wiring.

■ Turn off power prior to

repair.

■ Replace pressure

switch with correct

replacement part.

Symptoms of

Abnormal

Operation

Diagnostic/

Status LED

Code Fault Description Possible Causes Corrective Actions Notes and Cautions

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 40

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