Installation, Operation & Maintenance Manual

42
TROUBLE SHOOTING – SERVICE TIPS
10. TROUBLESHOOTING – SERVICE TIPS
Problem Possible Cause Suggested Remedy
Defective Thermocouple Replace
Heavy Draft Blowing across Pilot Redirect Air Movement or Eliminate
Plugged Pilot Orifice Replace Orifice
Pilot Outage Check Manual Pilot Valve
Check Main Gas Shut-Off Valve
No Gas
Check Manual Meter Valve
Consult Gas Company
Defective Thermopilot Switch Replace
Defective Ignition Control Replace
No Power
Check Power Source with Meter
Check Fuses
Defective Gas Valve Replace
Low Water Level in Boiler
Check for Leaks
or System Causing Low Water Cut-off to
Check Feeder (if Supplied)
Function
Defective Ignition Control Replace
High Gas Pressure Switch Open Check Switch Setting
(if Provided) Check Manifold Gas Pressure
Low Gas Pressure Switch Open Check Switch Setting
(if Provided) Check Manifold Gas Pressure
No Power
Check Power Source with Meter
Check Fuses
Defective Gas Valve Replace
Pilot Out
Relight Pilot
(May have defective pilot valve or relay)
Low Water in Boiler
Check for Leaks
or System Causing Low Water Cut-off to
Check Feeder (if Supplied)
Function
Defective Thermopilot Switch Replace
Defective Thermocouple Replace
High Gas Pressure Switch Open Check Switch Setting
(if Provided) Check Manifold Gas Pressure
Low Gas Pressure Switch Open Check Switch Setting
(if Provided) Check Inlet Gas Pressure
Main Gas Valve Will Not Open
(Spark Ignited Pilot)
Main Gas Valve Will Not Open
(Standing Pilot)