Whirlpool WPIO-369B Instruction Manual download pdf (Page 37)

37

■ Furnace fails to

operate.

■ Integrated

control module

LED display

provides “b4”

error code.

b4

■ Circulator

blower motor

senses a loss of

rotor control.

■ Circulator

blower motor

senses high

current.

■ Abnormal motor

loading, sudden

change in speed or

torque, sudden

blockage of

furnace air inlet or

outlet.

■ High loading

conditions, blocked

filters, very

restrictive

ductwork,

blockage of

furnace air inlet or

outlet.

■ Check filters, filter

grills/registers, duct

system and furnace air

inlet/outlet for

blockages.

■ Turn off power prior to

repair.

■ Furnace fails to

operate.

■ Integrated

control module

LED display

provides “b5”

error code.

b5

■ Circulator

blower motor

fails to start

10 consecutive

times.

■ Obstruction in

circulator blower

housing.

■ Seized circulator

blower motor

bearings.

■ Failed circulator

blower motor.

■ Check circulator

blower for

obstructions. Remove

and repair/replace

wheel/motor, if

necessary.

■ Check circulator

blower motor shaft

rotation and motor.

Replace motor if

necessary.

■ Turn off power prior to

repair.

■ Replace motor with

correct replacement

part.

■ Replace wheel with

correct replacement

part.

■ Furnace fails to

operate.

■ Integrated

control module

LED display

provides “b6”

error code.

b6

■ Circulator

blower motor

shuts down for

over or under

voltage

condition.

■ Circulator

blower motor

shuts down due

to over

temperature

condition on

power module.

■ High AC line

voltage to furnace.

■ Low AC line

voltage to furnace.

■ High ambient

temperatures.

■ Check power to

furnace. Verify line

voltage to furnace is

within the range

specified on the

furnace rating plate.

■ See “Product

Description” and

“Location

Requirements and

Considerations” for

furnace installation

requirements.

■ Turn off power prior to

repair.

■ Furnace fails to

operate.

■ Integrated

control module

LED display

provides “b7”

error code.

b7

■ Circulator

blower motor

does not have

enough

information to

operate

properly.

■ Motor fails

to start

40 consecutive

times.

■ Error with

integrated control

module.

■ Motor has a locked

rotor condition.

■ Check integrated

control module. Verify

control is populated

with correct shared

data set. See data

errors above for

details.

■ Check for locked rotor

condition (see error

code above for

details).

■ Turn off power prior to

repair.

■ Replace with correct

replacement part(s).

■ Use memory card for

the specific model.

■ Furnace

operates at

reduced

performance or

operates on low

stage when

high stage is

expected.

■ Integrated

control module

LED display

provides “b9”

error code.

b9

■ Airflow is lower

than demanded.

■ Blocked filters.

■ Restrictive

ductwork.

■ Undersized

ductwork.

■ Check filters for

blockage. Clean filters

or remove obstruction.

■ Check ductwork for

blockage. Remove

obstruction. Verify all

registers are fully open.

■ Verify ductwork is

appropriately sized for

system. Resize/replace

ductwork if necessary.

■ Turn off power prior to

repair.

Symptoms of

Abnormal

Operation

Diagnostic/

Status LED

Code Fault Description Possible Causes Corrective Actions Notes and Cautions

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

Comments to this Manuals

No comments