Lennox Hearth PI40

If the insert operates abnormally, the ready light on the control board will signal the nature of the abnormal operation. The following is a list of pos-

sible signals or codes:

Ready light is constant red Ignition Failure

Ready light ﬂashes red 1 short and 1 long blink Vacuum Switch Open

Ready light ﬂashes red 2 short blinks Proof of Fire Snap Switch Open

Ready light ﬂashes red 2 long blinks Over Temperature Snap Switch Open

Troubleshooting

Ignition Failure - Code - Ready light is constant red and ignite light ﬂashes two short blinks

Possible Problem Solution

Hopper is out of pellets Fill the hopper with pellets

Auger tube was not full of pellets when start button was pushed When cool, empty pellets in burn pot and push start button again

Burn pot dirty - holes plugged Clean the burn pot

Igniter not functioning Replace the igniter

Igniter fuse blown Replace 6 amp fuse located on front of the control board

Control Board has no Power - When selector knob is turned no lights light up

Possible Problem Solution

Power cord is not plugged in Plug in power cord

Board fuse blown Replace 3 amp fuse located on front of control board

Wall outlet not energized Check circuit breaker panel

Board broken, damaged, or defective Replace the control board

Vacuum Switch Shuts Insert Down - Code - Ready light ﬂashes red 1 short and 1 long blink

Possible Problem Solution

Front door is not sealing Latch or adjust the front door or replace door gasket

Ash drawer is not sealing Close latches, adjust latches, or replace drawer gaskets

Flue gas passageways restricted Clean the passageways (see Page 20)

Vent pipe restricted Clean the vent pipe (see Page 21)

Vacuum hose plugged Clean or replace the vacuum hose

Vacuum switch defective Replace the vacuum switch

Proof of Fire Snap Switch Shuts Insert Down - Code - Ready light ﬂashes red 2 short blinks

Possible Problem Solution

Hopper is out of pellets Fill the hopper with pellets

Auger tube was not full of pellets when start button was pushed When cool, empty pellets in burn pot and push start button again

Snap switch* defective Replace the snap switch

“Proof of ﬁre” switch is dirty Clean switch per instructions on Page 22

DIAGNOSTIC CODES