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FTC cables broken - Can I use heat pump without? Ecodan Heat pump

 
Air Source Heat Pumps (ASHPs)
Last Post by Derek M 1 year ago
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 jonbonbaby
(@jonbonbaby)
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Joined: 1 year ago
Posts: 1
Topic starter 30/12/2023 11:09 pm  

Hi this may be a stupid question , but my dog somehow managed to tear 2 cables that new attached to the FTC on the circuit board it is marked - RD - CNW12, to is coming up with error code L5 and the heat pump doesn't seem to be kicking in  

 

Any ideas if I can do a workaround or a way to fix ?


   
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 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4429
31/12/2023 12:46 am  

Posted by: @jonbonbaby
↑

Hi this may be a stupid question , but my dog somehow managed to tear 2 cables that new attached to the FTC on the circuit board it is marked - RD - CNW12, to is coming up with error code L5 and the heat pump doesn't seem to be kicking in  

 

Any ideas if I can do a workaround or a way to fix ?

The cable should be connected to THW1 - Flow Water Temperature Thermistor and THW2 - Return Water Temperature Thermistor.

To get your system operational I would suggest that you try to reconnect the four cores. Remove the plug from the circuit board and if you have a soldering iron then solder the broken wires together, or tape them if you don't have a soldering iron. The wires should be colour coded. When repaired replace the plug back in the socket.

You may be able to get replacement Thermistors later.

I doubt that the heat pump will function without these two signals since they are rather important for correct operation.

 


   
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