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Rob, Home Appliance Technician
Category: Appliance
Satisfied Customers: 420
Experience:  20 yrs. experience with a major worldwide manufacturer.
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I have a Vaillant combi boiler and there is a red light

going on intermittenly. My tenants... Show More
going on intermittenly. My tenants say they have to reset the boiler to get hot water and central heating.
What do you think is the problem? The boiler is an eco TEC pro 24.
Submitted: 1 year ago.
Category: Appliance
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replied 1 year ago.

Hi Pankaj,

There should be an error code shown on the display which would normally show the temp, this code would indicate the reason for the lockout or fault.

Without knowing the code it could be anything from low pressure, to a faulty sensor.

Ask the tenants if they can tell you what is shown on the display when the red light comes on.