Installation / Operation Instruction Manual
Table Of Contents
- TABLE OF CONTENTS
- INSTALLATION
- Figure 1
- Probable Cause
- Control Status
- LED Status
- Millivolt power is not present. Light pilot.
- None (LED not on or flashing)
- Gas valve is powered and waiting for the set point knob to be turned to a water temperature setting. If the set point knob is at desired setting the thermostat is satisfied.
- If set point knob is in “PILOT” position, then pilot flame is detected. (no faults).
- One flash and three second pause.
- LED strobe (two quick flashes) and three second pause.
- Thermostat calling for heat (no faults).
- Water heater operating normally
- Set point know was recently turn to “OFF” position. Wait until LED goes out before attempting to relight.
- Set point knob has been recently turned to the “OFF” position.
- LED on continuously.
- Weak pilot flame detected. System will reset when pilot flame is sufficient.
- Two flashes and three second pause.
- Insufficient water heating. System will reset.
- Three flashes and three second pause
- Excessive tank temperature. System must be reset.
- Four flashes and three second pause
- Probable Cause
- Control Status
- LED Status
- Five flashes and three second pause.
- Temperature sensor fault.
- Water leak detected by accessory module (some models).
- Six flashes and three second pause.
- Gas valve electronic fault detected.
- Seven flashes and three second pause.
- Eight flashes and three second pause.
- False pilot flame present.
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.
You can now turn the knob 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.
Excessive temperatures may
have been reached. Shut off the
control and reduce the water
temperature. Thoroughly verify
control operation, replace if
exceeding setpoint.
Five flashes and three
second pause
(LED red)
Electronics, sensor, or
gas valve fault detected.
Control may be wet or
damaged. Verify all connections
are tight; if problem persists
replace the control.
Solid ON
(LED red)
Not an error. Indicates
control is in OFF mode.
Pilot is off.
None; wait until LED turns off to
restart system.