help!!! no heating or hot water!!!!!!

[crusaders1435]

hi all....can anyone help?
We have a standard old school system of storage tank and expansion tank in loft. Directly underneath in the airing cupboard lives the hot water cylinder and pump ( GRUNDOS UPS 15-45x18 model 1A ) with boiler in the kitchen ( Olympic 28/50CF )...
Yes its old and we are changing the whole system after Chrimbo but till then we don't want to freeze!!! just want to get it working again....so....we tried the heating after the summer break and all was well for a few days but now we have no heating or hot water.
I have checked for air blockages in rads but all is good.
I have checked the pump and it seems to be spinning freely and its speed switch seems ok.
The pilot light is lit ok.
Info - There is No 3 way switch incorprated into this central heating set up.
The water levels in the tanks seem good.

When the boiler thermostat is switched from position 1 through to 5 you can hear the microswitch click but the system just doesn't fire up!

As the pump seems ok should I start at the boiler thermostat as the first probable cause of problem??
Any info or ideas would be gratefully received......cos its getting chilly!!
Thanks

 

[adlplumbing]

if pump is working the controls are
it requires an engineer

 

[Agile]

Is the gas valve knob in the correct position for boiler operation?

Tony

 

[crusaders1435]

cheers chaps.....
gas valve knob? there is no gas valve knob! I assume you mean gas valve as in 3 way switch!! there is no 3 way in this system, was an optional extra that was never installed!
The only gas valve of any description is to be found in the workings of the boiler!

i know i will have to get an expert on the case....just wondered if i could explore the obvious before i start shelling out ......

 

[Agile]

I said gas knob because that what I meant!

Has anyone relit a pilot light lately?

Tony

 

[crusaders1435]

sorry tony.......
yes, the pilot light did have to be re-lit but the knob seems normal enough.....

 

[Agile]

I expect the knob has to be returned to the operate position after relighting the pilot!

You may check that because its a user control!

Tony

 

[crusaders1435]

checked and all seems ok......gas knob seems to be in operating mode...

 

[Agile]

Did you check and move around a bit with all the controls calling for heat?

Are you sure you know which position it needs to be in to run?

Tony

 

[crusaders1435]

checked and double checked.... all is as it should be with regards knobs,switches,controls etc...... even with timer set to constant, selector set to heating and with boiler thermostat control manually set from 1 through to 5 nothing fires up other than the sound of the thermostat micrositch clicking past the number 1 setting!!

 

[Hugh Jaleak]

Is there power at the boiler when system is calling for heat? These boilers are pretty simple, 240v is sent to boiler when system is calling for heat, boiler fires. If power available, pilot is lit, but boiler still doesnt fire then it's time for a RGI.

 

[crusaders1435]

cheers.....
yup, seems to be power there, pilot is lit and nowt is happening.
Guessed i would need to call RGI...was hoping to find the source of prob without forking out big bucks!!!