Problem replacing old Honeywell thermostat with new Noma thermostat
#1
Member
Thread Starter
Join Date: Oct 2006
Posts: 4
Upvotes: 0
Received 0 Upvotes
on
0 Posts
Problem replacing old Honeywell thermostat with new Noma thermostat
"I replaced our old Honeywell thermostat with the Noma 7-day
programmable. There are 5 wirings in the Old one G,Y,W and R and Rc so I
connected those wirings in the new Noma with R connected to Rh. It worked for perfectly for
a while and after about 3 hours I noticed that the LCD in the Noma went
blank.
I checked the batteries, even replaced it for a new one, checked the dc
voltages in the baterry compartment but still there is no display.
Is there any problem with my wirings since I connected R to
Rh or is it just the new Noma unit that is just going bad?"
programmable. There are 5 wirings in the Old one G,Y,W and R and Rc so I
connected those wirings in the new Noma with R connected to Rh. It worked for perfectly for
a while and after about 3 hours I noticed that the LCD in the Noma went
blank.
I checked the batteries, even replaced it for a new one, checked the dc
voltages in the baterry compartment but still there is no display.
Is there any problem with my wirings since I connected R to
Rh or is it just the new Noma unit that is just going bad?"
#3
I've never heard of Noma.. Must be an off brand, and you just got the bad one.. I would gotten another Honeywell.
Why changes in the t-stat in the first place?
Why changes in the t-stat in the first place?
#5
Noma = DIY big box store POS special (not sure about in the US, but here it's only sold at canadian tire)
Return it and get a Honeywell. Turn the power off before swapping the stat. (don't want to short something out and blow the transformer)
Return it and get a Honeywell. Turn the power off before swapping the stat. (don't want to short something out and blow the transformer)
#6
Member
Thread Starter
Join Date: Oct 2006
Posts: 4
Upvotes: 0
Received 0 Upvotes
on
0 Posts
replacing old Honeywell thermostat with Noma
Originally Posted by mattison
What are all the terminals on the new stat. You may need a common wire on it and the battery may just be there for back-up.
New stat has G,Y, W, Rh and Rc (Rh and RC are
bridged but I disconnected it), C , H1 and H2
I tried to contact the tech support
they provided in the manual but I got the
wrong number