Model EZGas Pro gas burner — Instruction manual
MNEZGas 011917
– 15 –
Where appliance instructions differ from this manual, follow the appliance instructions.
4. Check system • start-up burner/appliance
(continued)
Service & Troubleshooting
Burner (control) will not come on
No power to control
• Check line voltage to the control (at least 102
vac
).
• Check all electrical connections.
Control is in lockout
• Press the reset button for 1 second.
Other no start problems
• Line voltage <90 VAC. Check line voltage. >132VAC
• Motor relay welded. If valve/ignitor has no voltage, and line voltage
OK, the issue is a welded motor relay. Replace the control.
• Reversed 120 VAC polarity – make sure hot and neutral lines are not
reversed on incoming lines.
• Check T-T, BV, CO and HV limit inputs.
Repeated flame failures
Check for
:
• Excessive airflow or draft causing flame to leave burner head-
check for proper air band setting and draft.
• Excessive back pressure causing flame to be erratic – check
appliance and flue for sooting/plugging.
• Defective flame rod assembly.
Control locks out at end of TFI
Check for
:
• No gas to burner – check gas supply.
Verify gas pressure is no higher than allowed for gas valve
(usually 1/2 psig or 14" water column).
• Shorted electrodes (shorted to burner head or diffuser) – in-
spect for cracked porcelain and replace as needed.
• Poor spark – check electrode spacing and condition per burner
manual. Replace or realign if necessary.
• Airflow too high – check air band setting.
• Ignitor module defective – replace if no spark.
• Check wiring connections.
• Flame rod shorted to ground or defective.
FROZEN PIPES/WATER DAMAGE
This is not a freeze protection device
. Suitable freeze protection monitoring or other precautions are recommended to protect against
ruptured pipes/water damage caused by fuel outage, safety related fault conditions or equipment failure.
