Ideal icos :(
- Thread starter Tarby25
- Start date
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are you sure its hf and not LF? My non-combi has flashed LF a couple of times on 1st start up in the morning (don't have it on at night) and after a couple of resets it kicks into life.
LF is no gas or frozen/blocked condensate according to my book otherwise I don't know.
LF is no gas or frozen/blocked condensate according to my book otherwise I don't know.
On my ideal isar H F means Flame Detection Error, not sure on the Icos.
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Heat exchanger fxxxxd! Once had this fault and the heat exchanger had pinholed. Hope it isn't that for your sake.
Hi Tarby,
According to the installation manual it means Flame Detection - Short Circuit Error. The rudimentary flow chart analysis suggests measuring the resistance across the detection electrode, if there's continuity the electrode needs replacing, if not it's the PCB.
Mathew
According to the installation manual it means Flame Detection - Short Circuit Error. The rudimentary flow chart analysis suggests measuring the resistance across the detection electrode, if there's continuity the electrode needs replacing, if not it's the PCB.
Mathew
The most likely cause of a HF code is a problem with the detection electrode and or the detection lead.
'HF.' is another code that can occur. The DOT is significant. 'HF.' means that a flame has been sensed when the gas valve is closed which means you may have a fualty gas valve that is 'letting by'.
It is possible as one of ythe other replies suggests that the main heat exchanger could be pinholed and is squirting water onto the probe. This IMO is very unlikely but you must not rule it out.
You will need to call a RGI to repair these potential fualts.
Regards.
'HF.' is another code that can occur. The DOT is significant. 'HF.' means that a flame has been sensed when the gas valve is closed which means you may have a fualty gas valve that is 'letting by'.
It is possible as one of ythe other replies suggests that the main heat exchanger could be pinholed and is squirting water onto the probe. This IMO is very unlikely but you must not rule it out.
You will need to call a RGI to repair these potential fualts.
Regards.
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