Carrier WeatherMaker 8000 Assembly instructions

It’s also important to regularly check vents and registers to make sure that they aren’t blocked, vacuum them to

clear up any potential debris.

Carrier Furnace Repair Guide

What’s Wrong With Your Furnace?

Remember to always turn your furnace completely off before opening it up to look around or attempt any x.

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Carrier Furnace Error Codes

heating?

Circuit

Breaker/Fuse

Most likely, either the electrical system providing

your furnace’s power has shorted or the power

switch has blown.

Try resetting your furnace’s circuit breaker. If it has blown,

you will need to replace it.

Igniter The furnace’s igniter might either be cracked or

faulty.

Check the part for cracks, if it is then replace the igniter. If

it isn’t cracked, use a multimeter to test for continuity.

Cycling

irregularly? Thermostat Your thermostat might be adjusting incorrectly,

causing the furnace to cycle on and off too often.

If your thermostat has an adjustable calibration scale,

adjust the heat anticipator. If this does not stabilize the

unit, you may have to replace the thermostat.

blowing

hot air?

Blower

Motor

Your blower motor may have completely burnt out.

If this doesn’t seem to be the case, then the

connecting belt may have simply broken.

Test to see if power is reaching the motor. If it does, but

isn’t running, the motor has likely failed. If the motor runs

but air doesn’t move, the connecting belt has probably

broken. You’ll have to replace the belt.

Blowing

too much

air?

Control

Board

The control board regulates the amount of voltage

that reaches each functioning part. If the relay that

controls the blower motor has failed, it will

continually send voltage to the motor.

Replace the control board.

Thermostat

The contact that controls the blower motor on your

thermostat may be stuck closed, causing the

blower motor to run continuously.

Use a multimeter to check for continuity. If it appears the

thermostat is the issue, replace it.

Leaking

water? Drain Pipe

Starting

and then

stopping

shortly

after?

Flame

Sensor

Your furnace’s ame sensor monitors the burner,

detecting whether a ame is present. If it is either

defective or dirty, it will not be able to detect a

ame.

If dirty, clean the sensor using a ne abrasive pad. If faulty,

replace the ame sensor.



Is your

furnace...

The

problem

might be

your...

What's wrong? How you can x it:

Each status code is a two-digit number. The rst number is determined by the number of short ashes and the

second digit by the number of long ashes.

When to call a professional to repair your Carrier

furnace

Error

Code 1-

The blower is on after

power up Blower runs for 90 seconds if the unit is powered up during a call for heat.

Error

Code 2-

Secondary voltage

fuse is open Check for a short circuit in the secondary voltage wiring.

Error

Code 3-

Pressure, draft

safeguard, aux-limit

switch, or blocked

vent switch didn’t

close (or reopened,

downow only)

If open for longer than 5 minutes, the inducer will shut off for 15 minutes before retry. Check for: low inducer

voltage; proper vent sizing; defective inducer motor; defective blower motor or capacitor; defective pressure

switch; restricted vent; excessive wind, inadequate combustion air supply; or obstructed pressure tubing.

Error

Code 2-

Pressure switch

didn’t open Check for an obstruction in the pressure tubing or a pressure switch that is stuck closed.

Error

Code 1-1 o previous code Stored status codes are erased when power to control is interrupted.

Rapid

LED

ashing

Line voltage polarity

is reversed. If twinned, refer to twinning kit instructions.

Error

Code 1-

Limit or ame roll-out

switch lockout Control will auto-reset after 3 hours. Reset the switch or replace fuse link.

Error

Code 3-

Limit or ame roll-out

switch is open

If the switch is open for longer than 3 minutes, the code will change to #1-3. Flame roll-out switch requires

manual reset. Check for: defective blower motor or capacitor; dirty lter or restricted duct system; loose

blower wheel; faulty switch or connections; or inadequate combustion air supply.

Error

Code 3-

Ignition proving

failure

Control will try three more times before lockout #1-4 will occur. If the ame signal is lost after the trial for

ignition period, the blower will come on for a 90 second recycle delay. Check for: build-up on the ame

sensor; proper microamp distribution to the ame sensor; defective gas valve or turned off gas valve; faulty

hot surface ignitor; low inlet gas pressure; the manual valve is shut-off; continuity of control ground; low

ame carryover or rough ignition; ungrounded ame sensor.

Error

Code 1-

Ignition lockout Control will auto-reset after 3 hours.

Error

Code 2-

Gas heating lockout Control won’t auto-reset. Check for either a badly-wired gas valve or a defective control.

Error

Code 2-

Abnormal ame-

proving signal Flame is proved while the gas valve is de-energized. Check for either a leaky or stuck-open gas valve.



Carrier

Error

Code

What this means



Action required

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