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Plumberpro
Plumberpro, Home Appliance Technician
Category: Appliance
Satisfied Customers: 634
Experience:  Heating and hot water heating appliances experienced
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have recently moved into a house with under floor heating downstairs

Resolved Question:

have recently moved into a house with under floor heating downstairs with a TP5000si room thermostats. have the instruction booklet but don't understand 2 things:
why/when a fan symbol comes on at top left of panel- can't see anything to explain it in the booklet
why heating boiler seems to be firing up when central heating upstairs is off and room controls downstairs should mean the underfloor heating isnt on.
worried it is costing me a fortune!
any help gratefully received.
Submitted: 2 years ago.
Category: Appliance
Expert:  Plumberpro replied 2 years ago.
Plumberpro :

Hi . is it just that the hot water is on instead? When the boiler is on?

Plumberpro :

Also need to check your optimum start control hasn't been set . this allows the controller to reach a set temp by a certain time as underfloor heating can often take a couple of hours to get them room up to temp depending on the type of flooring on top of heating pipes

Plumberpro :

Hi . do you still require help?

Customer:

hot water isn't on.

Customer:

how do I know if my optimum start control has/hasn't been set?

Customer:

what about the fan symbol that comes on?

Plumberpro :

Can't find the fan symbol anywhere , would have to check with Drayton on Monday .

Plumberpro :

The optimum start VI's accessed through the menu

Plumberpro :

Before you change these settings be sure you want to change them as it will effect the heating. If you are happy with the her your are getting then it may not be best to change it

Plumberpro :

Hi .was this info ok? If so would you mind rating my answer, thankjs

Customer:

what happened when you checked with Drayton on Mondya

Plumberpro :

Hi . danfoss technical , say there is no fan symbol on these . could it be a frost symbol ( fboiler comes on at 5 degrees) ?

Customer:

no there is a frost symbol too which is different

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