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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)
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.
Tank leakage detected
by accessory module.
Not an error-indicates
that the control is in OFF
mode.
27
Probable Cause
Gas valve is functioning
normally. Gas valve is not
powered. Light pilot.
You can now turn the knob 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.
Control recovers after receiving
message from accessory
module.
None; wait until LED turns off if
you want to restart system.
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