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TROUBLESHOOTING CHART – HONEYWELL V2.
LED Status
None (LED not
on or flashing)
One flash every
four seconds
(LED green)
One flash every
second
(LED green)
Two flashes
(LED yellow)
Four flashes
(LED red)
Five flashes
(LED red)
Six flashes
(LED red)
Solid ON
(LED red)
Nine flashes
(LED red)
Ten flashes
(LED red)
Control Status
Millivolt power is not
present. Light pilot.
Not an error. Indicates
pilot is lit and main burner
is off.
Not an error. Indicates
main valve is open and
main burner is lit.
Low thermopile voltage;
main valve not turned
ON.
Temperature cut-out limit
reached.
Water temperature
sensor failure.
Door temperature sensor
failure.
Not an error-indicates
that the control is in OFF
mode.
Tank leakage detected by
accessory module.
Abnormal combustion
chamber temperature
profile during heating
cycle.
Gas valve is functioning normally.
Gas valve is not powered. Light
pilot.
You can now turn the know to a
desired setpoint temperature
None. Control will automatically
shut main burner off when water
temperature reaches the setpoint
temperature.
Check thermopile and its
connections. Check pilot flame.
Check the valves and the water
temperature sensor. Reduce the
water temperature setpoint.
Thoroughly check
out main valve operation and
water temperature control before
walking away.
Check the valves and the water
temperature sensor. Reduce the
water temperature setpoint.
Thoroughly check
out main valve operation and
water temperature control before
walking away.
Check door temperature sensor
and its connection for open circuits
or shorts.
None; wait until LED turns off if
you want to restart system.
Control recovers after receiving
message from accessory module.
Clean all combustion air intakes to
the appliance. Clean the burner.
Remove all obstacles that may
restrict air flow to the burner.
26
Probable Cause
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