Replace Rheem t-stat with Honeywell RTH230B10 - http://www.hvacmechanic.com/ Forums

Original message

evanspikes2

70.185.171.153

"Replace Rheem t-stat with Honeywell RTH230B10" , posted Sat 21 Jun 12:31

I have a Rheem 41-20804-15 thermostat and want to replace it with a Honeywell RTH230B1006. The old thermostat has the following wiring: G-green wire; R-red wire; B-blue wire; Y-yellow wire; W2-white wire with another white wire jumpered to E; X-brown wire.

The new thermostat only has room for 5 wires and is as follows: Rh; Rc; W; Y; G. I'm pretty sure the R from the old goes to Rh & Rc new (jumped together) and the G old-G new and Y old-Y new. Other than those 3, I'm not quite sure what goes where next. Does this even seem compatiable? If so, please help. Thanks a bunch!

Evan

Replies:

theduke03

24.250.18.179

"Re(1):Replace Rheem t-stat with Honeywell RTH" , posted Sat 21 Jun 15:41

Your new thermostat is not compatible with your heatpump system.

"My dad was the most feared furnace fighter in Northern Indiana."

Houston204

98.196.66.53

"Re(1):Replace Rheem t-stat with Honeywell RTH" , posted Sat 21 Jun 15:40

I feel like a parrot repeating this so much...

Your new stat is not compatible with your multistage heatpump. I recommend the Honeywell RTH7400. (Set option 170 to 7, option 190 to 1, 240 = 9.

Terminal = wire
G = green
Rc & R = red
O/B = blue
Y = yellow
Aux & E = white
C = brown

"Tip of the Day" Remember to remove power first.

evanspikes2

70.185.171.153

"Re(2):Replace Rheem t-stat with Honeywell RTH" , posted Sat 21 Jun 19:29

Thank you for the info. I'll look into buying a Honeywell RTH7400 per your recommendation. Thanks again and have a great day!

Evan

theduke03

24.250.18.179

"Re(2):Replace Rheem t-stat with Honeywell RTH" , posted Sat 21 Jun 15:42

Hey Houston; you sound like a broken record!

"My dad was the most feared furnace fighter in Northern Indiana."

Houston204

98.196.66.53

"Re(3):Replace Rheem t-stat with Honeywell RTH" , posted Sat 21 Jun 16:35

A record with diagrams.

"Tip of the Day" Remember to remove power first.

Houston204

98.196.66.53

"Re(4):Replace Rheem t-stat with Honeywell RTH" , posted Sat 21 Jun 23:27:

That Rheem will use C for brown. Blue connects to O/B.

"Tip of the Day" Remember to remove power first.

[this message was edited by Houston204 on Sun 22 Jun 01:56]

evanspikes2

68.98.251.242

"Re(5):Replace Rheem t-stat with Honeywell RTH" , posted Fri 27 Jun 17:12

Thanks a bunch for the help. I took your advice and bought a Honeywell RTH7400 and it works like a charm. Thanks again...

Evan