Clean It Up

UK General Cleaning Forum => General Cleaning Forum => Topic started by: APWS on September 27, 2013, 05:07:46 pm

Title: hot box problem
Post by: APWS on September 27, 2013, 05:07:46 pm

I was cleaning paint off a wall today when my hot box packed up, it starts ok and there is fire at the bottom but it will not heat all the coils when i pull the trigger, so no hot water, relied on good old wet blaster & removal gel to get job done,
any idea's guys?
cheers,

Title: Re: hot box problem
Post by: Blast Away on September 27, 2013, 07:22:44 pm

Fuel nozzle may need changing, plastic casing on shaft may be worn, flow switch might be sticking, electrodes could be miss sparking and need replacing

Title: Re: hot box problem
Post by: BDCS on September 27, 2013, 10:07:06 pm

 Does the relay stay in ? The flow switch, thermostat etc are in series which pull the relay in. If the burner starts then stops you need to see if the relay stays in afterwards to isolate the electrical from the fuel circuits. You can frig the supply to the relay to prove each side.

Title: Re: hot box problem
Post by: Matt Gibson on September 28, 2013, 08:08:39 am

So much can go wrong with a boiler. I had a similar problem, it ended up being the fuel pump. needed to replace. But the things i had to go through to narrow it down was amazing.

Title: Re: hot box problem
Post by: BDCS on September 28, 2013, 08:54:39 pm

Bless  ::)roll

Title: Re: hot box problem
Post by: APWS on September 29, 2013, 11:38:18 am

thanks for the replies, going to take it to be looked at.