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Thank you all again for your kind help, you all have mentioned numerous causes so will have a play about tomorrow to determine what the fault is, enjoying the puzzle to be honest, will let you know when I solve it.

Thanks mate, appreciate your advice

Error table quote says go to section E, which says its a temperature sensor fault. What I cant understand is why cant I clear the error code when using the 'reset' control knob to see if the boiler goes to the same fault; it just stays on the same fault code constant?

Just like to thank all for advice and help. Completed all exams and passed, now to learn the trade lol

Have a problem with a Megaflo 28 System boiler: Error 20 appears on the digital display. Fan comes on, nothing else happens, the boiler shuts down showing 'error 20' Fault code After several attempts, the Error 20 code will not clear, even when I turn off the power to the boiler and turn the...

Thankyou for your kind responses Whats F.A.G.S stand for?

Not sure if it can be discussed, but I am doing my ACS appliances next week and was wondering what is involved in the exam. I have just completed my CCN1 involving spillage testing on fires, fault finding on rigs etc. Was wondering if some of the things I have already completed during my CCN1...

Hi all, I have my ACS exams in a few weeks and having a mental block in a home study course, concerning compartment ventilation. If an open flued 10kw net boiler has compartment ventilation direct to outside, it requires high and low ventilation as follows: High ventilation is = 5 x 10 = 50cm2...

That could be a good answer regarding the gauge being faulty. The differential pressure between the primary flow and return should be within 0.5 bar, the primary flow being the higher of the 2. Will swop the heat exchanger and see if that helps.

The heat plate (HIU or boiler) is installed in a property inside a block of flats and fed from an external commercial boiler house away from the flats. The pressure to the heat plate (boiler) on the primary flow is 1 bar whilst on the primary return it is registering 1.7 bar? The heating...

Thanks for getting back to me and offering to help out. The plate heat exchangers are installed on a district heating system and yes the flow rates do fluctuate but i am using average flow rates for my calculations. Would it be possible to contact you by email, I could then send you my...

Sorry to be a pain but im having a thick moment. I am trying to set up an Excel spread sheet where I can enter formulas into it and give me total cost losses. I have tried to alter (80-75) in my formula to (80-78), but it seems to mess up the calculation and give a bigger loss rather than less?

You are an absolute star, many thanks

Can anyone tell me how to work out the Kw usage of a plate heat exchanger using Primary and return flow rates when no demand for hot water or heating is needed. (Basically a valve is passing and want to work out the heat loss from the plate, due to the valve passing). So lets assume the...

As I understand it, the room stat should be located within the coldest part of the house, normally the hallway. However, am I right in saying, when installing room stats in multi storey flats which have small hallways and communal corridor’s, the room stat should be installed within the...

I was wondering if anyone knows the correct size of lagging used on copper 22mm and 15mm copper internal heating pipework. Im having a little argument with a person who says it is ok to use 9mm and I think 19mm should be used? I have looked on the net but finding information is...

The guy lives around 70 miles away or for sure I would,

I received a call from a landlord, asking for an urgent Landlord Gas Safety Check to be completed due to his tenant complaining that one had not been completed after she had moved in 3 weeks prior. I emailed all documents through to the landlord once complete; the landlord is now ignoring all...

Sorry I should have mentioned the copper pipework was laid under a wooden floor attached to wooden joists. The void area below the wooden flooring is just over 2.5 feet in depth

Could someone help solve an argument. What is the correct sized lagging used after installing underfloor 15mm and 22mm copper pipe on the flow and return heating pipework? Is it 9mm for both? Also what is considered the best method of securing underfloor copper pipes? My view is...