Home Repair (alt.home.repair) For all homeowners and DIYers with many experienced tradesmen. Solve your toughest home fix-it problems.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Posted to alt.home.repair
external usenet poster
 
Posts: 3
Default Gas boiler transformer blown

Hi. I replaced the old thermostat (Honeywell T87F) with a ritetemp
8022C. I have a Dunkirk Plymouth series II gas boiler (installed in the
last 5 years). The old thermostat was connected in a two-wire (R/W)
fashion. After I connected the new thermostat, I turned the power back
on to the boiler and nothing happened. Specifically, the power light on
the low-water cut-off did not come back on. In all honesty, I am not
even sure it was on when I first turned the power off as I didn't
really notice. However, none of the breakers are blown so I am assuming
there is power at least as far the 110/24 transformer. I know there is
no power coming out of the transformer as I tested the circuits. Does
anyone know a quick and easy (and safe) way I can test the transformer
and/or the incoming power. I tested the power switch and it is OK (no
resistance in on position, infinite resistance in off).

Any ideas or advice would be greatly appreciated. Thanks,

  #2   Report Post  
Posted to alt.home.repair
external usenet poster
 
Posts: 1,199
Default Gas boiler transformer blown


When you checked the Xfrmr, did you check it with the wires still
connected to the secondary? If so, disconnect the load on the secondary
side and then check the voltage. There could have been a short on the
load side which brings the voltage to 0V.
If you still get 0v on the secondary, but you get 110V on the primary,
then the Xfrmr is probably gone.

  #3   Report Post  
Posted to alt.home.repair
external usenet poster
 
Posts: 3
Default Gas boiler transformer blown


Mikepier wrote:
When you checked the Xfrmr, did you check it with the wires still
connected to the secondary? If so, disconnect the load on the secondary
side and then check the voltage. There could have been a short on the
load side which brings the voltage to 0V.
If you still get 0v on the secondary, but you get 110V on the primary,
then the Xfrmr is probably gone.


Well it turns out the previous owners had a contract with NStar that
was still in effect so we called them in. Then it turns out that there
is a trip in the circuit to the thermostat. No way to know if I tripped
it while changing the old thermostat or if it was already tripped
prior. Service tech reset the switch and we are set to go. In fact, he
said with the new thermo, there is no need for the trip as there is no
chance of overloading that circuit so he took it out.

Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
New condensing boiler installation - truth or lies Martin Evans UK diy 57 July 2nd 05 03:13 PM
Mixing header and pumps John Aston UK diy 79 December 8th 04 10:50 AM
Noisy banging boiler what is the cause? Tim UK diy 8 November 3rd 04 10:36 PM
Heat banks (again!) Dave UK diy 148 September 6th 04 09:45 PM
Boiler problem - hot water, cold radiators Dan the man UK diy 9 October 8th 03 12:26 AM


All times are GMT +1. The time now is 06:24 PM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"