TROUBLESHOOTING
NOTE: All troubleshooting items are listed in order of operation and likely occurrence. 
WARNING: 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.
Make sure grille guard is in place before running heater. If screen or grille guard is removed for servicing it must be replaced prior to operating the heater.
|
|
|
|
|
OBSERVED SYMPTOM |
| POSSIBLE CAUSE |
| REMEDY |
When Piezo ignitor knob is | 1. Ignitor electrode positioned wrong. | 1. | Reposition electrode | |
turned, there is no spark at pilot | 2. Ignitor electrode is broken. | 2. | Replace electrode | |
| 3. | Ignitor electrode not connected to ignitor. | 3. | Reconnect ignitor 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 control valve (Piezo is part of |
|
|
|
| control valve on 10K units). |
|
|
|
| |
ODS/pilot lights but flame | 1. Gas supply turned off or equipment shut- | 1. | Turn on gas supply or open equipment | |
goes out when control knob is |
| off valve closed. |
| shutoff valve. |
released | 2. Air in gas line when installed. | 2. | Continue holding down control knob. Re- | |
|
|
|
| peat ignition operation until air is removed. |
| 3. | ODS/pilot is clogged. | 3. | Clean ODS/pilot (see Cleaning and Main- |
|
|
|
| tenance page 13). |
| 4. | Gas regulator setting is not correct | 4. | Replace gas regulator |
| 5. | Control knob not in pilot position | 5. | Turn Control knob to pilot position |
When Piezo ignitor knob is | 1. Control knob not fully pressed in. | 1. | Press in control knob fully | |
turned, there is a spark at the | 2. Control knob not pressed in long enough | 2. After ODS/pilot lights, keep control knob | ||
ODS/pilot but no ignition |
|
|
| pressed in for 30 seconds |
| 3. | Equipment shutoff valve not fully open |
| |
| 3. | Fully open equipment shutoff valve | ||
| 4. Thermocouple connection loose at con- | 4. | Hand tighten thermocouple nut until snug, | |
|
| trol valve |
| and then tighten 1/4 turn more. |
| 5. | Pilot flame not touching thermocouple, | 5. | - |
|
| which allows thermocouple to cool, caus- |
|
|
|
| ing pilot flame to go out. This problem |
|
|
|
| could be caused by one or both of the |
|
|
|
| following: |
|
|
|
| a. Low gas pressure |
| a. Contact local gas company |
|
| b. Dirty or partially clogged ODS/pilot |
| b. Clean ODS/pilot (see Cleaning and |
|
|
|
| Maintenance, page 13). |
| 6. Thermocouple damaged | 6. | Replace thermocouple | |
| 7. | Control valve damaged | 7. | Replace Control valve. |
|
|
|
| |
Burner does not light after | 1. Burner orifice is clogged | 1. | Clean burner orifice (see Cleaning and | |
ODS/pilot is lit |
|
|
| Maintenance on page 13), or replace |
| 2. | Burner orifice diameter to small |
| burner orifice |
| 2. | Replace burner orifice | ||
| 3. | Inlet gas pressure is too low | 3. | Contact local gas company |
Delayed ignition of burner | 1. Manifold pressure is too low | 1. | Contact local gas company | |
| 2. | Burner orifice is clogged | 2. | Clean burner orifice (see Cleaning and |
|
|
|
| Maintenance on page 13), or replace |
|
|
|
| burner orifice |
|
|
|
|
|
Unvented
