Ideal Pro Logic Plus 30

[reedy77]

Had the above boiler installed in March, been working beautifully....
However, yesterday morning no heating or hot water. So called out the installer. To his credit he came out within a few hours and spent an hour or so trying to find the fault. He was reluctant to start fiddling to much as he did not wish to invalidate the manufacturers warranty. He did check that the pump was not stuck.

The message on the screen is :-
No water flow lockout - 1 fill system to 1.0 bar - 2 bleed radiators - 3 check radiator valves open - 4 reset boiler - 5 contact installer.

To confirm the system is at 1.5 bar. No air in the system, all rad valves open....

Rang Ideal this morning, who said yes will come and fix your boiler on the 4th January, great quality service....not when i'm asthmatic, my wife is preggers the daughter is just getting over swine flu! So hence would like to get the house warm. (I did incidentally explain this to ideal who just said 'oh, can't do anything'....

Any way had a look through the fault finding chart i have checked connecttions on:-

The no flow thermistor
The control thermistor
The return thermistor

All appear to be fine..

If i get someone to fix it will it invalidate my warranty? Has anyone else had this problem?

Any help/suggestions would be much appreciate...

 

[Blake]

Getting a qualified gas engineer out to fix your boiler will not invalidate your warranty. Did the installer check the resistance on the thermistors to see if one was faulty?

 

[reedy77]

not to my knowledge...

 

[PLUMBike]

Remove the Flow (or Return) Thermistor from the CH Flow Pipe and disconnect the wires.

Check the resistance using a suitable multimeter connected across the thermistor’s terminal pins.

At 25 oC expect 9,700 - 10,300 Ohms
At 60 oC expect 2,400 - 2,600 Ohms
At 85 oC expect 1,000 - 1,100 Ohms

 

[reedy77]

Mike when you say check the resistance at a specic temperature, what temperature? I can only assume the radiator temperature? As the ater coming out is mightly cold! Thanks for the help...

 

[reedy77]

After the previous rather dence comments.... been a rather long weekend!

Sorted and the solution....

Took of off the thermistor.

Used a DVM - measued the resistance in front of a fan heater. Noticed that when I took it off it was not connected to to what appears to be an earthing point.

So after checking reconnected to the appeared earth point and hey presto all appears to be fine....it was flopping around...

Happy wife, happy daughter and after a hot bath one happy man!!!

My sincere thanks for the help and advice..