Kenmore 5EW1.75 - Manual (Page 30)

SERVICE HINTS
You may avoid inconvenience and service calls by checking these points before you call for service.
IF YOUR SYSTEM IS NOT HEATING OR NOT GIVING ENOUGH HEAT
Possible Cause What to do
'rhermostat is not set correctly Reset thermostat above room temperature.
Boiler or Burner may be dirty Clean all flue passages and the vent pipe. Have burner cleaned and readjusted.
Burner may not be firing at
proper rate Check nozzle size if there is any doubt. Have burner adjusted.
Burner may be short-cycling Short-cycling (too frequent off and on) of burner will cause sooting. If boiler and/or
burner become dirty at frequent intervals, after correcting the “dirty condition" also
correct the aquastat control setting (or other cause of short- cycling).
Check thermostat heat anticipator and correct setting, if necessary, per instruction
sheet packaged with thermostat.
No power to boiler Check overcurrent protection. Check to be sure power supply circuit is “ON”.
Controls out of adjustments Reset according to instructions packed with controls.
Radiators not heating Open radiator vents to vent excess air. Check flow control valve (if used). It may be
in closed position.
Circulating pump not running Check relay operation.
Poor electrical contact. Check all control terminals and wire joints.
1 IF BURNER IS NOISY . . .
Possible Cause What to do
Oil burner fan wheel may be dirty Clean fan wheel with a stiff brush and cleaning solvent. Readjust oil burner.
Draft regulator may be stuck Check to see if vane swings freely. Clean, if vane is stuck.
IF RADIATORS ARE NOISY ... |
Possible Cause What to do
Air in the system Open radiator vents to vent the air. Check expansion tank.
RELIEF VALVE IS LEAKING ... |
Possible Cause What to do
Dirt on seat Open valve manually. 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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