Cleaning and Maintenance
Continued
venting system | 3. Check for evidence of excessive condensation. | |
Conduct annual inspection of the venting system | Continuous condensation can cause corrosion | |
following these guidelines: | of caps, pipes, and fittings and can be caused | |
1. Check areas of venting system that are ex- | by having excessive lateral runs, too many | |
elbows, or exterior portions of the system | ||
posed to the weather for corrosion (rust spots | ||
being exposed to cold weather. | ||
or streaks and, in extreme cases, holes). Have | ||
4. Inspect joints to verify that no pipe section or | ||
these items replaced immediately by a quali- | ||
fied service person. | fitting has been disturbed and loosened. Check | |
2. Remove the vent cap and shine a flashlight | mechanical supports such as wall straps for | |
rigidity. | ||
into the vent. Remove any foreign material. | ||
|
Troubleshooting
WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater.
CAUTION: Never use a wire, needle, or similar object to clean pilot. This can damage pilot unit.
The two most common causes of a malfunctioning gas appliance are:
1.Loose wiring connections
2.Construction debris clogging the pilot and/or gas control valve filter
Note: Before troubleshooting the system, make sure the gas shutoff valve is ON.
OBSERVED PROBLEM POSSIBLE CAUSE | REMEDY |
Ignitor will not spark or pilot will not light
1.No gas supply, or shutoff valve is OFF
2.Air in gas line
3.Construction debris clogging pilot orifice
4.Low gas pressure
5.Kinked pilot line
6.Control valve knob is not opening
7.No power to unit or the igni- tion module or power trans- former is bad
8.Vent damper not fully open
1.Check to see if you have gas supply and that equipment shutoff valve is opened
2.Repeat lighting procedure sev- eral times to purge all air out of lines. If after repeated attempts appliance does not light, call for qualified service and repair.
3.Remove debris and dirt, in- spect and clean any other possible obstructions
4.Contact your gas supplier to check pressure
5.Have a qualified technician replace pilot line
6.Replace control valve (Refer to
Replacement Parts, page 38)
7.Check that main power is on and that all wire connections are made correctly to the ignition model (see Wiring Diagram, page 27). Check for 24 VAC at the secondary side of the trans- former. If 24 VAC is present, and module does not operate, have module replaced otherwise have transformer replaced.
8.Open vent damper until fully locked in OPEN position
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