TROUBLESHOOTING
Note: For additional help, visit DESA International’s technical service web site at www.desatech.com.
Note: All troubleshooting items are listed in order of operation.
WARNING: Turn off and unplug heater and let cool be- fore servicing. Only a qualified service person should service and repair heater.
CAUTION: Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/ pilot unit.
OBSERVED PROBLEM | POSSIBLE CAUSE | REMEDY | ||
When ignitor button is pressed, there is no | 1. | Ignitor electrode positioned wrong | 1. | Replace ignitor |
spark at ODS/pilot | 2. | Ignitor electrode broken | 2. | Replace ignitor |
| 3. | Ignitor electrode not connected to igni- | 3. | Reconnect ignitor cable |
|
| tor cable |
|
|
| 4. | Ignitor cable pinched or wet | 4. | Free ignitor cable if pinched by any |
|
|
|
| metal or tubing. Keep ignitor cable dry |
| 5. | Broken ignitor cable | 5. | Replace ignitor cable |
| 6. | Bad piezo ignitor | 6. | Replace piezo ignitor |
|
|
|
|
|
When ignitor button is pressed, there is | 1. | Gas supply turned off or equipment | 1. | Turn on gas supply or open equipment |
spark at ODS/pilot but no ignition |
| shutoff valve closed |
| shutoff valve |
| 2. | Control knob not in PILOT position | 2. | Turn control knob to PILOT position |
| 3. | Control knob not pressed in while in | 3. | Press in control knob while in PILOT |
|
| PILOT position |
| position |
| 4. | Air in gas lines when installed | 4. | Continue holding down control knob. |
|
|
|
| Repeat igniting operation until air is re- |
|
|
|
| moved |
| 5. | Depleted gas supply | 5. | Contact local propane/LP gas company |
| 6. | ODS/pilot is clogged | 6. | Clean ODS/pilot (see Cleaning and |
|
|
|
| Maintenance, page 13) or replace ODS/ |
|
|
|
| pilot assembly |
| 7. | Gas regulator setting is not correct | 7. | Replace gas regulator |
|
|
|
|
|
ODS/pilot lights but flame goes out when | 1. | Control knob not fully pressed in | 1. | Press in control knob fully |
control knob is released | 2. | Control knob not pressed in long enough | 2. | After ODS/pilot lights, keep control |
|
|
|
| knob pressed in 30 seconds |
| 3. | Equipment shutoff valve not fully open | 3. | Fully open equipment shutoff valve |
| 4. | Thermocouple connection loose at con- | 4. | Hand tighten until snug, then tighten 1/4 |
|
| trol valve |
| turn more |
| 5. | Pilot flame not touching thermocouple, | 5. | A) Contact local propane/LP gas company |
|
| which allows thermocouple to cool, |
|
|
|
| causing pilot flame to go out. This prob- |
| B) Clean ODS/pilot (see Cleaning and |
|
| lem could be caused by one or both of |
| Maintenance, page 13) or replace ODS/ |
|
| the following: |
| pilot assembly |
|
| A) Low gas pressure |
|
|
|
| B) Dirty or partially clogged ODS/pilot |
|
|
| 6. | Thermocouple damaged | 6. | Replace thermocouple |
| 7. | Control valve damaged | 7. | Replace control valve |
|
|
|
|
|
Burner does not light after ODS/pilot is lit | 1. | Burner orifice is clogged | 1. | Clean burner (see Cleaning and Mainte- |
|
|
|
| nance, page 13) or replace burner orifice |
| 2. | Burner orifice diameter is too small | 2. | Replace burner orifice |
| 3. | Inlet gas pressure is too low | 3. | Contact local propane/LP gas company |
www.desatech.com
14 | 104412 |
