What does this symptom mean?
The burner lights while the control is held but goes out when released, or requires unusually long pressure. The symptom alone does not identify a failed part because several causes can produce the same behaviour. Proper diagnosis considers when the fault occurs, appliance model and whether it is constant or intermittent.
Likely causes
1. The thermocouple is dirty, misaligned or not heated properly
The thermocouple is dirty, misaligned or not heated properly. Similar symptoms can have different causes, so parts should not be replaced by guesswork.
2. A weak flame fails to heat the safety sensor
A weak flame fails to heat the safety sensor. Similar symptoms can have different causes, so parts should not be replaced by guesswork.
3. A thermocouple or flame-safety valve fault
A thermocouple or flame-safety valve fault. Similar symptoms can have different causes, so parts should not be replaced by guesswork.
4. Incorrect burner-head assembly
Incorrect burner-head assembly. Similar symptoms can have different causes, so parts should not be replaced by guesswork.
Safe checks before booking service
- Hold the control only for the normal period stated in the manual.
- Check whether flame reaches the safety-sensor tip.
- Clean around the cooled burner without bending the sensor.
- Compare other burners to determine whether the issue is isolated.
How a technician diagnoses the fault
The inspection begins by confirming the reported behaviour and safely testing the affected function. The technician then compares operation with model specifications and measures related components where required. The purpose is to find the root cause rather than replace the first part associated with the symptom.
| Inspection stage | What is checked? |
|---|---|
| Confirm the symptom | Reproduce the fault and identify timing and affected function. |
| External inspection | Assembly, cleanliness, moving parts, ventilation and visible connections. |
| Technical measurements | Test model-specific components related to the fault. |
| Post-repair test | Operate the appliance and confirm safety and stable performance. |
Parts that may be related
ThermocoupleFlame-safety valveBurner headControl valve
This is a list of possibilities, not a final diagnosis. Any part must match the model number and inspection result because a similar appearance does not guarantee identical dimensions, connections or ratings.
How to reduce repeat faults
- Clean burners only after cooling and dry them before reassembly.
- Do not force controls or attempt to dismantle them.
- Watch flame colour and stop use if gas odour or abnormal flame appears.
When to call Glem Gas maintenance
Call when the fault repeats after safe checks, when there is gas odour, abnormal heat or noise, or when access requires dismantling the appliance. Have the model number, symptom and governorate ready.