The first step in identifying an operational problem is to determine
whether the fault is in the furnace or in the thermostat and/or its
connecting wiring.
To help make this determination, the furnace is equipped with a
“Thermostat ON” diagnostic light. If the light is “ON”, it indicates the
thermostat has closed and is calling for heat; the blower should be
running. If the light is “OFF”, the furnace should not be operating
(unless the Continuous Speed switch is set to run the motor con-
tinuously).
1. If the furnace will not start:
Turn the thermostat to its highest setting. If the light goes on,
the thermostat has closed, so the fault is in the furnace. If the
light does not go on, the thermostat or its connecting wiring is
the problem.
2. If the furnace will not turn off:
Turn the thermostat to its lowest setting. If the light goes off and
the furnace continues to run, the thermostat has opened properly
and the fault is in the furnace. If the light stays on, the fault is
in the thermostat or its connecting wiring.
After the fault area is isolated by use of the diagnostic light, a check
of the following components can be made more efficiently.
TROUBLESHOOTING
PROBLEM
POSSIBLE DEFECTIVE PARTS OR COMPONENTS
1. The furnace will not turn on
• Thermostat
• Circuit breaker or fuse is open
• Motor
• Fan control switch
• Electronic control
• Transformer
2. Motor runs continuously
•
Continuous Speed switch is not on “Off” position
• Thermostat wires incorrectly attached to furnace
3. Elements on, but motor does not run
• Motor
• Electronic control
4. Motor going on and off in short cycles
(or in too long cycles)
• Heat anticipator in thermostat incorrectly set
or may be defective
5. Must set thermostat much higher (or lower)
than the desired house temperature
• Thermostat is not leveled or out of calibration
6. Not enough heat
• One or more defective elements or relays
•
Season Select switch in “Mild” positio
n
• Safety limits opening because duct obstruction
or dirty filters are restricting air flow
• Defective or incorrectly wired two-stage
or outdoor thermostat
• Lack of enough cold air returns in house
7. Two-stage or outdoor thermostat not operating properly •
Season Select switch not in “Mild” positio
n
10
LIMITED WARRANTY TO OWNER
The w
a
rr
a
nties herein set forth
a
re in lie
u
of
a
ll other w
a
rr
a
nties expressed or implied
a
nd sh
a
ll not
a
pply to
a
ny
a
ccessory not p
a
rt of
the prod
u
ct. O
u
ellet C
a
n
a
d
a
Inc., w
a
rr
a
nts its prod
u
cts to the owner
a
g
a
inst defects in m
a
teri
a
l
a
nd workm
a
nship for
a
sixty (60) month
period
u
nder norm
a
l
u
se
a
nd services following d
a
te of p
u
rch
a
se when proof of s
u
ch is provided to seller.
The oblig
a
tion of O
u
ellet C
a
n
a
d
a
Inc.,
u
nder the terms of this w
a
rr
a
nty, sh
a
ll be to s
u
pply
a
new p
a
rt, or the rep
a
ir of
a
defective p
a
rt
a
t the comp
a
ny
’
s option with no cost to owner for the new or rep
a
ired p
a
rt.
Su
ch p
a
rts
a
re to be ret
u
rned to the f
a
ctory, or s
u
ch other
loc
a
tion
a
s the comp
a
ny m
a
y design
a
te
a
t the owner
’
s expense. This w
a
rr
a
nty does not oblig
a
te O
u
ellet C
a
n
a
d
a
Inc. to be
a
r the cost
of l
a
bor in repl
a
cing
a
ny
a
ssembly,
u
nit or component p
a
rt thereof, nor does the comp
a
ny
a
ss
u
me
a
ny li
a
bility for second
a
ry ch
a
rges,
expenses for inst
a
lling or remov
a
l, or
a
ny other conseq
u
enti
a
l losses, freight or d
a
m
a
ges.
IN CA
S
E OF PRODUCT FAILURE
It sh
a
ll be the oblig
a
tion of the owner or contr
a
ctor to f
u
rnish to the comp
a
ny, within the design
a
ted w
a
rr
a
nty period the following inform
a
tion :
1. Model N
u
mber
a
nd seri
a
l n
u
mber of prod
u
ct involved.
2. Complete description of the problem enco
u
ntered with prod
u
ct.
