Search found 7 matches

by john57classic
Tue Jan 14, 2014 6:40 pm
Forum: Residential
Topic: Need help with a Gremlin! Please!
Replies: 13
Views: 4509

- Need help with a Gremlin! Please!

Thanks again I went back up and checked the furnace board as well as taking the cover off the T'stat. The voltage b/w R and C at the T'stat barely registers maybe 2V but it does move the needle. Voltage between R and C on the control board (other end of wire) same things barely moves the need but th...
by john57classic
Mon Jan 13, 2014 9:07 pm
Forum: Residential
Topic: Need help with a Gremlin! Please!
Replies: 13
Views: 4509

- Need help with a Gremlin! Please!

Thanks yes the 24V I now see tells me the transformer is working. The - AC reading on the the T'stat is exactly the same as what it displays when the power is switched off to the furnace. I'm still researching this T'stat but the batteries, which have been changed, are there primarily to maintain pr...
by john57classic
Sun Jan 12, 2014 9:23 pm
Forum: Residential
Topic: Need help with a Gremlin! Please!
Replies: 13
Views: 4509

- Need help with a Gremlin! Please!

Honeywell Chronotherm III and yes there is a common connection between the T'stat and the control board. Things continue to evolve right now the T'stat is displaying -AC which I'm still researching but this is what it displays when the power to the furnace is shut off, which it is not. Since I saw 2...
by john57classic
Sun Jan 12, 2014 3:47 pm
Forum: Residential
Topic: Need help with a Gremlin! Please!
Replies: 13
Views: 4509

- Need help with a Gremlin! Please!

I'll try to clarify onT'stat. When working normally the unit will make a click when turning on to call for heat and a yellow light will come on indicating the system is running, then when satisfied there will be a similar click and the light goes out indicating it is back off. When the gremlin is ar...
by john57classic
Sat Jan 11, 2014 8:32 pm
Forum: Residential
Topic: Need help with a Gremlin! Please!
Replies: 13
Views: 4509

- Need help with a Gremlin! Please!

So the gremlin finally came back earlier this week, I waited until today to see if he wanted to leave. Same situation as previously described. T'stat calls for heat and immediately clicks off. Got the tools and went up to the attic, shut off the furnace power,removed the panel and started checking t...
by john57classic
Tue Dec 31, 2013 3:39 pm
Forum: Residential
Topic: Need help with a Gremlin! Please!
Replies: 13
Views: 4509

- Need help with a Gremlin! Please!

Freon, thanks for the feedback. The unit is a 15 year old York unit have to find the model number. The thermostat is a Honeywell Chromotherm III. It uses 5 wires and contains a tag that says must be connected to common to function. I saw this when swapping the thermostats. I think the testing and ju...
by john57classic
Sun Dec 29, 2013 2:59 pm
Forum: Residential
Topic: Need help with a Gremlin! Please!
Replies: 13
Views: 4509

Need help with a Gremlin! Please!

Simple explanation of the state I am observing. Thermostat clicks on to call for heat and immediately clicks off like it's satisfied. While in the "state" the main blower won't run when the switch is moved from auto to on. Initially when in this state the thermostat briefly displayed NO AC between t...