Potterton boiler fault.

gsxr1

I keep getting a pump fault low pressure fault on my 5 year old gas boiler.

The pressure on both the boiler pressure gauge and the fill valve gauge is reading 1.5 - 2.0+ pressure. Good.

When left on the 2 mins of the fault light coming on and the pump running, the boiler lights and works normally. It used to light within 4 seconds.

Any suggestions on what has become faulty? Im hoping it is simply a sensor. The pump sounds and runs like new. And heats the 7 rads well.

JohnnieK

What model of Potterton is it?

gsxr1

Ok. so I have been looking at all the basic problems it could be. I have pressure, I have zero air in the rads.

So I had a look inside the boiler.

there is a low pressure switch on the flow. Its open circuit when there is pressure in the system according to the wiring diagram.

So I disconnected one terminal and the checked. Problem solved. But not fixed.

I reconnected the terminal and turned on the boiler again. I manually reached in the tapped the body the hydraulic differential pressure valve mechanism , the plunger pushed out and again she started up.

. At least it may be sticking . Can these be disassembled, cleaned up and reused? It looks like there maybe some sort of diaphram inside. Should I be looking at why this valve is not working correctly. I did have past trouble with the auto bleeder. It leaked water from its top cap. After I tightened it , it stopped.

I am hearing a little air in the system when I put my ear to the pump. Very little.
Its a performa HE. I think.. no labels anywhere.

JohnnieK

Are you an RGI?

gsxr1

No. But I want to understand what the problem is and buy the parts myself for a service man to fit.

I dont trust anyone I dont know to mess with it.

gsxr1

gsxr1 wrote: »

.

So I had a look inside the boiler.

there is a low pressure switch on the flow. Its open circuit when there is pressure in the system according to the wiring diagram.

So I disconnected one terminal and the checked. Problem solved. But not fixed.

I reconnected the terminal and turned on the boiler again. I manually reached in the tapped the body the hydraulic differential pressure valve mechanism

gsxr1 wrote: »

But I want to understand what the problem is and buy the parts myself for a service man to fit. .

:pac::pac:;)

gsxr1

gary71 wrote: »

:pac::pac:;)

Yeah. I wont interere with any part of the appliance that involves the combustion process.

Its the pump system after all.

Its my property. Am not doing it for gain. I have heard of rgi lads change everything but the right part costing a client a fortune.

Not that any of ye guys are like that. If I can get to the bottom of it. I will.

Not really up for a debate on RGI rules.

Not rules, safety, where you see no risk I see a potential risk.

Try ringing the manufactures they may give you the heads up or point you in the direction of a decent RGI.

bheat

What was the problem in the end.. I have identical problem?

bheat

what was the reason for these faults as I have identical symptoms with my boiler locking out!

shane0007

bheat wrote: »

what was the reason for these faults as I have identical symptoms with my boiler locking out!

He can't answer as he blew himself up.

Egass13

shane0007 wrote: »

He can't answer as he blew himself up.

The giggling pin was stuck in the laughinshaft. Common enough