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by bittybunny
Wed Jun 09, 2010 10:37 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: worcestor bosch 24i junior non condensing AGAIN PLEASE HELP
Replies: 5
Views: 4913

[quote="htg engineer"]Well yes, i'd be happy replacing PCB.

htg[/quote] thanks htg you is a star as im sure you been told many times,rob
by bittybunny
Wed Jun 09, 2010 2:21 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: worcestor bosch 24i junior non condensing AGAIN PLEASE HELP
Replies: 5
Views: 4913

[quote="htg engineer"]Yes it does look like it's the PCB at fault. Have you tested the fan ? does it seem ok ? Don't want to say yes replace PCB - for you to buy a new PCB to find the fan developed a fault and damaged the PCB, fitting a new PCB the same will happen. You need to establish w...
by bittybunny
Wed Jun 09, 2010 11:41 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: worcestor bosch 24i junior non condensing AGAIN PLEASE HELP
Replies: 5
Views: 4913

[quote="htg engineer"]Yes it does look like it's the PCB at fault. Have you tested the fan ? does it seem ok ? Don't want to say yes replace PCB - for you to buy a new PCB to find the fan developed a fault and damaged the PCB, fitting a new PCB the same will happen. You need to establish w...
by bittybunny
Tue Jun 08, 2010 3:51 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: worcestor bosch 24i junior HELP PLEASE
Replies: 6
Views: 20389

[quote="htg engineer"]If there's definitely no power to the fan, then yes could be PCB fault. However there wont be power to the fan as soon as you turn the power on, there'll be a sequence. Is the fan motor warm ? hi htg engineer sequence starts with pump,fan motor not warm ,no power goin...
by bittybunny
Mon Jun 07, 2010 7:55 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: worcestor bosch 24i junior non condensing AGAIN PLEASE HELP
Replies: 5
Views: 4913

worcestor bosch 24i junior non condensing AGAIN PLEASE HELP

. hi htg ENGINEER no fan does not run,when boiler first turned on there is no power to the fan and eventually goes to fault flashing 4 times a second,if i reset it and blow into aps fan starts straight away,there is no power to the fan when boiler first turned on and when i manually start it by blow...
by bittybunny
Mon Jun 07, 2010 5:21 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: worcestor bosch 24i junior HELP PLEASE
Replies: 6
Views: 20389

[quote="htg engineer"]Fan running ? operating the air pressure switch makes the boiler come on - this is what the fan should do. If the fan isn't running is there power to the fan ? if yes - replace fan. htg[/quote] hi htg no fan does not run,when boiler turned on there is no power to the ...
by bittybunny
Sat Jun 05, 2010 7:44 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: worcestor bosch 24i junior HELP PLEASE
Replies: 6
Views: 20389

worcestor bosch 24i junior HELP PLEASE

Hi guys bosch 24i junior,model before greenstar,turned on call for heat or hot water fan will not fire up,blow down tube on air pressure switch ,fires up straight away,am i right in thinking that on this model the air pressure switch must be in closed position at rest to start ignition sequence,than...
by bittybunny
Mon Mar 29, 2010 8:33 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: back boiler fault
Replies: 1
Views: 2861

back boiler fault

hi guys got a problem with a back boiler,dont know which model but is mated to a robinson willey fire,back boiler is controlled by a randall hot water only or heating and hot water timer,in hot water only mode the hot water flows and returns through the hot water cylinder circs just fine,in heating ...
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