| Problem |
Possible Cause |
Solution |
| Blower does not come on |
Power cord or power not on. |
Plug in or turn on power. |
| |
Thermostat setting is too low. |
Increase thermostat temperature setting. |
| |
DSI module needs to be reset. |
Unplug heater power cord from the electrical outlet: wait for a minimum of five seconds. Plug heater cord back into outlet.. |
| |
Faulty blower motor. |
Replace blower motor. |
| Igniter does not spark |
DSI module needs to be reset. |
Unplug heater power cord from the electrical outlet: wait for a minimum of five seconds. Plug heater cord back into outlet. |
| |
Faulty igniter or ignition wire. |
Unplug heater power cord, check igniter and ignition wire for damage. Replace parts as needed. |
| |
Air switch does not operate. |
Check flue/air supply ducts for obstructions. Look for loose/leaky air hoses to air switch. Check for 24vac on terminals 4 and 5. If missing check for 120vac. If yes on 120vac replace transformer. |
| |
Igniter spark gap incorrect. |
Reset spark gap to 1/8' (0.125”). |
| Burner does not stay lit |
Damaged wires between DSI module and electrode. |
Replace wires as required. |
| |
Improper gas inlet pressure. |
Check gas inlet pressure per specs. In operators manual. |
