TROUBLESHOOTING
WARNING: Never attempt to service heater while it is connected to propane supply, operating or hot. Severe burns can occur.
SYMPTOM | POSSIBLE CAUSE | REMEDY | ||
|
|
|
| |
Burner fails to light | 1. Gas supply valve closed | 1. | Open gas supply valve slowly | |
| 2. | 2. | Close propane supply valve | |
|
| closed (propane/LP units |
| on propane tank and reopen |
|
| only) |
| slowly |
| 3. | Blockage in burner orifice | 3. | Replace burner orifice |
| 4. | Piezo ignition system not | 4. | Assure ignitor electrode gap is |
|
| sparking |
| 5.0 mm (.195 in). Check wire |
|
|
|
| lead for damage Replace piezo |
|
|
|
| ignitor and/or ignitor electrode |
|
|
|
| as necessary. Do not bend elec- |
|
|
|
| trode, this may cause breakage |
|
|
|
| |
Pilot lights but goes out when | 1. Not enough | 1. | Relight, hold automatic control | |
automatic control valve button |
|
|
| valve button in 45 seconds |
is released | 2. Low gas pressure | 2. | Check for proper gas supply | |
| 3. | Thermocouple loose or needs | 3. | Tighten connection or replace |
|
| to be replaced |
| thermocouple |
| 4. | Automatic control valve needs | 4. | Replace automatic control |
|
| to be replaced |
| valve |
|
|
|
| |
Burn rate is low | 1. Main burner valve not fully | 1. | Fully open main burner valve | |
|
| open |
| by pushing in control knob |
|
|
|
| and turning counterclockwise |
|
|
|
| towards HIGH position until |
|
|
|
| it stops |
| 2. | Plugged gas orifices | 2. | Replace gas orifice |
| 3. | Low gas pressure | 3. | Check gas supply; check |
| 4. | Low fuel supply |
| regulator output |
| 4. | Consult gas supplier to deter- | ||
|
|
|
| mine adequate supply. If using |
|
|
|
| propane/LP gas, the tank could |
|
|
|
| be empty |
8 | www.desatech.com |
