Installation / Operation Instruction Manual

26
Troubleshooting Chart – Honeywell V2
LED Status
Control Status
Probable Cause
None (LED not on
or flashing)
Not an error.
Indicates control is in
OFF mode. Pilot is
off.
Gas valve is functioning normally.
Gas valve is not powered. Light pilot.
One flash every
four seconds
(LED green)
Not an error.
Indicates pilot is lit
and main burner is
off.
The knob can be turned to a desired
setpoint temperature.
One flash every
second
(LED green)
Not an error.
Indicates main valve
is open and main
burner is lit.
None. Control will automatically shut
main burner off when water
temperature reaches the setpoint
temperature.
Two flashes and
three second
pause (LED
yellow)
Low thermopile
voltage; main valve
not turned ON.
Check thermopile and its
connections. Check pilot flame.
Four flashes and
three second
pause (LED red)
Temperature cut-out
limit reached,
causing shutdown.
Check the valves and the water
temperature sensor. Reduce the
water temperature setpoint. Verify
control operation, replace if
exceeding setpoint.
Five flashes and
three second
pause (LED red)
Electronics, sensor,
or gas valve fault
detected.
Check water temperature sensor and
its connection for open circuits,
shorts, or differences in resistance
between the two sensor elements.
Solid ON
(LED red)
Not an error.
Indicates that the
control is in shutdown
mode. Pilot is off.
None; wait until LED turns off if you
want to restart system.