Update. new 0.68uF cap fitted today. This produced 10v across relay (ON when 'Demand Heat') so still not enough volts. I have re-fitted original cap. in parallel with new cap. Volts now up to 15.2 & relay now works! something in the circuit (too small for my old eyes) must be taking to much...
Hi Andy - Yes, The fault was/is with the 'Drayton Digistat SCR' receiver not operating its on-board relay (should be about 24v but found to be less than 6v). I read on the web that this is a common fault that can be fixed by replacing the 0.68 uF 275v ac rated capacitor that supplies it. I have...
gasservice1985W - When you said bypassed, you've linked internally at the boiler?
I have linked the boiler 'Ls' & 'Lr' connections in the boiler to bypass the timer.
"mcmoby69" - knob in winter position? broken maybe?
I am a Scoucer Sir! My knob is not in winter position.
I agree with your comment however. I am trying to get my C.H. working for a Yorkshire winter. Stat & timer have been by-passed. Still won't go. I am running the C.H. in diagnostic...
Thank you both for your quick feedback.
New batteries fitted 1 week ago.
Room temp was 19 C
RF Stat is set to 30 C
I can see 'receiver' working aprox. every 5 mins.
Time switch is set to 'Over-ride' (red light on) so this would ignore any stat fault anyway. I will go in to boiler and link...
Advice please re: Worcester Greenstar 24i junior about 4 years old.
Problem: No Central heating.
Current status:
System re-pressurized from '0' to '1.5' bar after approx. 3 months not used.
Digital Timer on 'override' (calling for heat)
Hot water was & is OK
All radiators get...