33
FURNACE - Pilot Model (continued)
Effective: 8/10/98
CAUSE
SOLUTION
B L O W E R S H U T S O F F AT S A M E T I M E B U R N E R S H U T S O F F
Faulty relay
--------------------------------------------------------
Replace relay
Thermostat wired wrong
--------------------------------------
Correct wiring*
B U R N E R FA I L S T O I G N I T E A N D - B L O W E R FA I L S T O R U N
No electrical power to the furnace
--------------------------
Reconnect or replace power source.*
B L O W E R V I B R AT E S O R I S N O I S Y
Damaged blower wheel
----------------------------------------
Replace blower wheel.
Motor shaft bent
--------------------------------------------------
Replace motor
Loose motor
------------------------------------------------------
Tighten motor mounting bracket.
Restricted discharge duct system
----------------------------
a. Make sure ducting meets furnace’s minimum
requirements.*
b. Make sure there is no excess ducting or unnecessary
bends.*
c. Make sure any closable registers are fully open and
unrestricted.*
P I L O T FA I L S T O I G N I T E O R S TAY L I T
Plugged pilot orifice
--------------------------------------------
Clean or replace pilot orifice.
Electrode out of adjustment
----------------------------------
Adjust electrode to furnace’s specifications.
Pilot tube defective
----------------------------------------------
Replace tube.
Piezo sparker defective
----------------------------------------
Replace sparker
Defective thermocouple
----------------------------------------
Replace thermocouple.
Defective valve
----------------------------------------------------
Replace valve.
Vent kit not sealed
----------------------------------------------
Seal vent where it meets with the furnace.*
MICA window missing
------------------------------------------
Replace MICA
Combustion air hose plugged or collapsed
----------------
Replace combustion hose
Water in propane
------------------------------------------------
Add alcohol to the propane bottles.*
Burner plate gasket or
----------------------------------------
Replace gaskets
pilot gasket not sealed
L A Z Y F L A M E ( y e l l o w )
High gas pressure
------------------------------------------------
*Set pressure to a minimum of 11˝ W.C. with all appliances
running. Replace regulator if not obtainable.
Burner out of adjustment
--------------------------------------
Adjust burner according to furnace specification.
Combustion wheel installed backwards or loose
--------
Reposition wheel and tighten.
Air leakage at gaskets
------------------------------------------
Replace gaskets
Low voltage
--------------------------------------------------------
Correct power supply*
FAN RUNS CONTINUOUSLY WITH THERMOSTAT “OFF”
Shorted thermostat leads
--------------------------------------
Replace wire or wires.
Defective relay
----------------------------------------------------
Replace relay
Defective thermostat
--------------------------------------------
Replace thermostat
I N S U F F I C I E N T H E AT
Furnace under fired
----------------------------------------------
1. Set gas pressure to 11˝ W.C. with all appliances running,
replace regulator if not obtainable. Also, check main
burner orifice, it must comply with furnace’s
specifications.*
2. Check ducting and return air according to furnaces
specifications.
Furnace limiting
--------------------------------------------------
Check ducting and return air. It must comply with furnace’s
specifications.*
*indicates NOT covered under warranty.
