Bad thermostat? No heat upstairs, heat works downstairs

Old 12-14-04, 05:03 AM
Visiting Guest
Posts: n/a
Bad thermostat? No heat upstairs, heat works downstairs

I have a Honeywell mercury thermostat upstairs that quit working yesterday. I can't get it to kick the heater on. I'm not sure of the exact switch/stat model number b/c there are any identifying marks/numbers that I can see on the stat but on the inside of the cover it says "LR1620 Class 2 30V Max". Not sure if that helps.

Downstairs we have a digital stat and it works fine and the heater is working and blowing hot air just fine. Upstairs I get nothing: no air, no heat. Any ideas on my best course of action?

I see some recommendations to switch this mercury style to digital. What cost should I expect to replace this switch with the orig and what would digi run me? I'll hit Lowe's/HD soon and get some info from them too.

Is it likely something I can repair or adjust on the stat or does it sound like it's failed and needs to be replaced? It's about 6-7 years old.

Old 12-15-04, 04:51 AM
mattison's Avatar
Join Date: Mar 2003
Location: Cinti, OH
Posts: 5,315
Upvotes: 0
Received 0 Upvotes on 0 Posts
Is this a heat pump or electric heat or gas ??
Old 12-16-04, 04:16 AM
Visiting Guest
Posts: n/a
Gas, electric igniter

it's gas heat with an electric igniter. i replaced the stat, no luck. cycled the breaker, no luck. cycled the gas valve switch on the heater, no luck. cycled power via the switch at the unit, no luck. the fan will come on though after power is turned on but the gas will not flow and thus not ignite. i have coming to look at it... i hear the igniter can go bad, so maybe that's it. i don't know make/model on it but if this guy doesn't fix it then i'll get that info.

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: