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ES/ESH-LT209_10152019
Single Stage Unitary Range
TROUBLESHOOTING
Blower Motor Fails To Run
•
Is the thermostat calling for heat? Is there 115V at the burner receptacle?
•
Check blower side door for seal. Repair if necessary
•
Check blower for obstructions. Replace blower if necessary.
No Gas Supply
•
Check to see if manual supply valve to heater is open. No manifold pressure indicates valve is closed.
•
Gas pressure downstream of gas control can be measured by connecting a manometer to pressure tap on
control.
•
Supply gas pressure can be checked at 1/8" NPT pressure tap in gas supply system.
•
Combination gas control gas valve or the ignition module may be faulty.
Burner Does Not Light
•
Is spark visible through site glass during ignition trial? If not, further electrical checks by a qualified service
person are required.
•
Check to see if gas lines were properly purged of air.
•
Check inlet and outlet gas pressure during ignition period.
Burner Does Not Stay Lit
•
Check ground wire continuity.
•
Check insulation on the igniter leads.
•
Measure flame signal current; it should be between 2 to 6 micro amps DC. Minimum 0.8 micro amps
•
Clean flame rod if necessary.
•
Replace module if necessary.
Module Codes
Module Codes (CNE/FENWAL)
◊
1 FLASH -
Air Flow Fault
◊◊
2 FLASHES -
Flame Sensor Issue
◊◊◊
3 FLASHES -
Ignition Lockout (after 3 failed attempts)
Potted (Channel Products)
◊
1 FLASH -
Air Flow Fault
◊◊
2 FLASHES -
Flame Sensor Issue
◊◊◊
3 FLASHES -
Ignition Lockout (after 3 failed attempts)
◊◊◊◊
4 Flashes
- Gas Valve Not Connected
Summary of Contents for ES/ESH Series
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