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Andrew Smith
Andrew Smith, Engineer
Category: UK Plumbing
Satisfied Customers: 3591
Experience:  Domestic Gas, Commercial Gas, LPG, Unvented Hot Water, Part P Electrical, Commercial Catering
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Having issues with ideal mini c24

Customer Question

Having issues with ideal mini c24
Submitted: 1 year ago.
Category: UK Plumbing
Expert:  Brian replied 1 year ago.
Hi, my name is***** have been in the plumbing & heating trade for approximately 15 years. I will be helping you today. If you could expand on this please.
thanks in anticipation.
Customer: replied 1 year ago.
Hi Brian getting no HW or CH from Ideal Mini C24 fan works fine air switch clicks then nothing from gas valve, no spark or ignition
Customer: replied 1 year ago.
Presuming it's the PCB if that's the case is it the full sequence PCB I require? Gas valve was replaced but nothing
Expert:  Andrew Smith replied 1 year ago.
Are you able to take the ignition lead off and hold it 2mm away from metal case and see it it sparks then?
Customer: replied 1 year ago.
Hi Andrew, when you say metal case where exactly do you mean
Expert:  Andrew Smith replied 1 year ago.
When you have the front cover off, remove the ignition lead from the electrode and then hold it a couple of mm away from the metal case of the boiler
Customer: replied 1 year ago.
Nothing. Just does the usual fan starts air pressure switch clicks then nothing.
Expert:  Andrew Smith replied 1 year ago.
It may be clicking, but the microswitch may have failed.Do you have a meter to check it is actually switching?
Customer: replied 1 year ago.
I have a multimeter how do i go about checking do its switching. When I tested the dark blue wire from the air pressure switch/ overheat stat to see the the gas valve received 240v as instructed by ideal it only gave a reading of about 25v
Expert:  Andrew Smith replied 1 year ago.
Ok, it should switch 240v, can you check all the wires to the APS and see if you have 240v to start with?
Customer: replied 1 year ago.
Hi Andrew,Unless in doing something wrong it's only ever reading between 20-25 volts
Customer: replied 1 year ago.
Any ideas? I've ordered an ignition PCB as I can't continue to go without hot water 😩
Expert:  Andrew Smith replied 1 year ago.
Good idea.Let me know how you get on when you swap it
Customer: replied 1 year ago.
Would you agree it's the most likely cause as gas valve APS and fan have been replaced.
Expert:  Andrew Smith replied 1 year ago.
Yes
Customer: replied 1 year ago.
Fingers crossed then, I will let you know in the morning how it goes. I signed up to Scottish Gas for boiler cover for a year until I replace for a HE system and they refused me due to my flue system being incorrect.As it stands the flue system runs as follows, a horizontal extension runs from boiler elbow out of wall and into a 90 bend it's then at a slight angle to take the flue 400mm away from a window opening running vertical up the wall approx 900mm into another elbow supported by two brackets then a section approx 175mm long projecting out from the elbow as the flue. I'm a downstairs flat and they have said flue is incorrect and requires a flue guard however the flue projects 14" out from wall and deepest guard I can find is 10.5"
Customer: replied 1 year ago.
Still nothing
Expert:  Andrew Smith replied 1 year ago.
Anything lower than 2m should have a flue guard.The flue should be nonger than 3m and every 90 degree bend takes 1m off the length
Customer: replied 1 year ago.
It's above 2 meters from me but there's an upstairs flat it's approx 400mm below there door enterence and about 600mm across from there door. So would a guard be required?
As the flue projects out 13" and the deepest guard I can find is 10.5" would u build a frame underneath the guard?

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