Troubleshooter - Mertik GV60

2.07 1e Thermocouple

Step 1: Check the pilot light and thermocouple

  • If the pilot light is too small:
    • Check whether the pilot burner is dirty and clean it if necessary (click HERE for instructions).
    • Check if there is a gas leak.
    • Check if the pilot tube is kinked or dirty.
    • Check whether the pre-pressure is too low.
  • If the top of the electrode is not (sufficiently) in the pilot flame, bend it into the flame.

Step 2: Check the circuit for shorts or breaks.
- Check that the thermocouple is not broken inside the interrupter
- Check that the interrupter is not broken inside the gas control block
- Check whether the black-red/yellow control cables are properly connected (at the receiver and interrupter).
-  Check whether there is a short circuit at the interrupter.

Step 3: Check the receiver

Disconnect the black-red/yellow control cables from the receiver and connect them together.
-  Ignite the fire in manual mode (click HERE for instructions).
    -  If the pilot stays on, replace the receiver (because it is defective). The rest of the thermocouple system is fine.
    - If the pilot goes out, go to Step 4.

Step 4: Check thermocouple and gas control block
Turn the thermocouple directly into the gas control block and ignite the fire in manual mode (click HERE for instructions).
    - If the pilot remains lit, replace the thermocouple interrupter (because it is defective).
    - If the pilot goes out, go to step 5.

Step 5: check thermocouple

Check the thermocouple by replacing it or measuring the voltage (should be >5mV).

 - If the thermocouple is not defective, replace the gas control block.

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