Owner's manual

7
TROUBLESHOOTING CHART
(Replaces pg. 26-27 in instruction manual.)
LED Status Control Status Probable Cause
None (LED not on
or flashin
g)
Electrical pow er not
p
resent
1. Control pow er sw itch in " OFF" position
2. Su
pp
l
y
volta
g
e interru
p
ted
One short flash
every four
seconds
Stand-by mode,
Thermost at is sat isf ied (no
faults
)
Temperature demand is satisfied (no call for
heat)
Alternates bright
and dim
(
heart beat
)
Thermost at calling f or
heat (no fault)
Tank temperature below setpoint of
t hermost at
Short flash once
every second
Weak pilot signal on last
call for heat
1. Unstable pilot
2. Pilot tube block or restricted
3. Oxidation build-up on pilot electrode
4. Wire damage to pilot assembly or bad
connection at
g
as valve
Tw o flashes,
three second
pause
Pressure sw it ch not
w orking - closed position
1. Pressure switch tubing kinked or blocked
2. Blocked pressure tap on switch
3. Fault y pressure sw itch
Three f lashes,
three second
pause
Pressure sw it ch or
temperat ure sw itch not
w orking - open position
1. Vent blockage or improper vent
configuration
2. Pressure switch tubing kinked or blocked
3. Blow er not spinning to speed
4. Fault y pressure sw itch
Four flashes,
three second
p
ause
Excessive tank
temperat ure, syst em must
be reset
1. Thermal w ell sensor out of calibration
2. Faulty gas valve
Five f lashes,
three second
p
ause
False pilot flame present Pilot valve stuck in open position
Six flashes, one
flash, three
second pause
(Soft Lockout)
Failed to light pilot,
syst em resets aft er (5)
minutes
1. Unstable pilot
2. Pilot tube block or restricted
3. Oxidation build-up on pilot electrode
4. Wire damage to pilot assembly or bad
connection at
g
as valve