SERVICE HINTS
You may avoid inconvenience and service calls by checking these points before you call for service.
Possible Cause
Thermostat is not set correctly
Boiler or Burner may be dirty
Burner may not be firing at proper rate
Burner may be
What to do
Reset thermostat above room temperature.
Clean all flue passages and the vent pipe. Have burner cleaned and readjusted.
Check nozzle size if there is any doubt. Have burner adjusted.
Check thermostat heat anticipator and correct setting, if necessary, per instruction sheet packaged with thermostat.
No power to boiler
Controls out of adjustments
Radiators not heating
Circulating pump not running
Poor electrical contact.
Check overcurrent protection. Check to be sure power supply circuit is "ON".
Reset according to instructions packed with controls.
Open radiator vents to vent excess air. Check flow control valve (if used). It may be in closed position.
Check relay operation.
Check all control terminals and wire joints.
Possible Cause | 1 | What | to do |
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Oil burner fan wheeI | may be dirty ] | Clean | fan wheel | with | a stiffbrush | and cleaning solvent. Readjust oil burner. |
Draft regulator may | be stuck | Check | to see if | vane | swings freely. | Clean, if vane is stuck. |
Air in the | system | Open | radiatordo | vents to vent the air. Check expansion tank. |
Possible | Cause | What |
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Possible | Cause | What | to do |
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Dirt on | seat | Open | valve | manuaIly. Allow water to run and clear valve seat. |
Water | logged expansion tank | Drain | tank. | see instructions. |
HAVE YOUR SERVICE TECHNICIAN CHECK ANY PROBLEM YOU ARE UNABLE TO CORRECT.
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