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47
TROUBLESHOOTING
Ste
p
8
Ste
p
7
Ste
p
6
Ste
p
9
Step 1
Step 2
Step 3
Step 4
Step 5
Is there a Call For
Heat?
Is Disable connection intact?
Does the combustion air
blower come on?
Is 4-20mA present at the quick
disconnects on the black and blue
wires of the tem
p
erature controlle
r
?
Is 24VAC at the NC side of
the air pressure switch?
Does F2 on ignition module
have AC
p
owe
r
?
Is blower pressure setting
(vacuum) correct?
Does i
g
niter
p
rove?
Is air switch bouncing?
Call our Technical Service Department
Is gas pressure correct?
Is there continuity in the wire
between F2 and Pin J5-6?
Replace air pressure switch.
Correct the shutter
setting or blower
amp draw.
NO
Check the switch and/or
line voltage
YES
Does the power switch provide
power to the control panel?
Unit is in standby mode.
Reattach.
NO
NO
Y
ES
YES
NO
Is diagnostic board
indicating open
safeties?
Check and correct power
connections at main terminal
block, circuit breaker panel or
blower relay.
NO
NO
YES
N
O
YES
Is 24VAC at PS on ignition module?
Is connecting plug secure?
NO
NO
NO
YES
NO
Is the flame sensor signal to the
i
g
nition module
g
reater than 1 uA DC?
YES
The unit is oka
y
YES
YES
Replace HSI
NO
Correct the gas pressure.
NO
Repair or
Re
p
lace wire.
Correct wiring.
YES
YES
NO
NO
YES
YES
Is Amp draw during heat-
up for HSI greater than
3.1 Amps?
NO
YES
YES
Is there 120VAC at the blower or
blower relay?
Is the unit runnin
g
?
NO
Is static and dynamic inlet gas
pressure correct?
YES
NO
Replace temperature
controller.
Correct Safet
y
YES
NO
1-805-278-5300