Why is my Vaillant VC 156/5-7 not starting and showing fault code F.36 or F.37?
If your Vaillant Water Heater isn't starting, you're not getting any hot water, the heating remains cold, and the display shows symbols with a continuously lit red LED alongside fault code F.36 or F.37, this indicates a fault in the flue gas route. Have your competent person rectify the fault.
What to do if Vaillant VC 156/5-7 doesn't start, with no hot water and cold heating?
If your Vaillant Water Heater isn't starting, resulting in no hot water and cold heating, there are several potential causes and solutions: * **Gas Supply:** Check if the gas isolator cock (both on-site and on the product) is closed. If so, open them. * **Water Supply:** Ensure the cold water stop valve is open. * **Power Supply:** Verify the power supply to the building and check the fuse. The product should automatically restart when power is restored. * **Product Status:** Make sure the product is switched on. * **Temperature Settings:** Check that the heating flow and hot water temperatures are not set too low or to the 'Heating off' position. Adjust accordingly. * **System Pressure:** Insufficient system pressure can cause this issue. If the water pressure in the heating ...
General| Brand | Vaillant |
|---|---|
| Model | VC 156/5-7 |
| Category | Water Heater |
| Language | English |
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