Troubleshooting - PEERLESS Series 63 Installation, Operation & Maintenance Manual

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