01:54PM | 07/16/03
Member Since: 07/15/03
2 lifetime posts
I purchased a new digital thermostat and bounced the inforamtion provided off with the current handler and heat pump schematics I am using to make sure everything is right... BUT... there are a few problems...

The thermostat shows a wiring diagram to meet the following:

R = 24v Wire - (Hot wire of 24v transformer)
Y1 = First Stage of compressor - (Activates when first stage of compressor is called)
W1 = First Stage of auxiliary heating - (Activates when first stage of auxiliary heat is called or compressor heat in NR mode)
W2 = Second Stage of auxiliary heating - (Activates only when second stage of auxiliary heat is called)
G = Fan - (Always activates when system is on)
E = Emergency heat relay controls outdoor thermostat - (Always on in emergency mode; off in normal mode)
A = Normal compressor operation relay - (Always on in normal mode; off in emergency mode)
O, B = Reversing valve operation - (RD = Activates in cool mode; RB = Activates in heat mode; NR = Does not activate)
B, C, (X) = Common Wire - (Common wire of 24v AC transformer)

My Heat Pump and Handler both show this for a schematic:


Y2 ( Nothing on Therm for this ) ----------------------------------------------------------> ODD ( Optional )
R -------------------------------------> R ---------------------------------------------> R ( Obvious Fix here )
C (Nothing on Therm for this ) ---> C --------------------------------------------> C ( Nothing on thermostat diagram showing a "C" ) *
Y1 -----------------------------------> Y ---------------------------------------------> Y ( Obvious Fix here )
G --------------------------------------------------------------------------------------------------> G ( Obvious Fix here )
E --------------------------------------------------------------------------------------------------> W1 ( Confused; Thermostat diagram has a W1 also ?? )
W2 --------------------------------------------------------------------------------------------------> W2 ( Obvious Fix here )
B -------------------------------------> B --------------------------------------------> B ( Which B on the Thermostat Diagram ?? )

The Heat Pump Model Number and Serial Number are listed below:

Model # RPMC-042JAZ
Serial # 6288 M0603 12767
MFD 02/2003

I sure hope this is readable and understandable. Thanks for the help in advance.


12:38PM | 07/17/03
Member Since: 07/15/03
2 lifetime posts
Im not sure if your post is referring to what I should wire up or what.

Thank you for the reply. Let me redo what I have since what I typed earlier doesnt seem to make much sense.

Thermostat Diagram (This is what the thermostat is telling me each point controls)

R = Hot Wire of 24 Volt Transformer

Y1 = First Stage of Compressor

W1 = First stage of auxiliary heating

W2 = Second stage of auxiliary heating

G = Fan

E = Emergency Heat Relay (Controls outdoor thermostat, if available)

A = Normal compressor operation relay (if available)

O/B = Reversing Valve (RD=Activates in cool mode; RB=Activates in heat mode; NR=Does not activate)

C = Common wire of 24v AC transformer (if available)

** Notice above there is a W1 and a W2. BUT, the handler diagram shows that E (from the thermostat) should goto W1 on the handler. This is what is confusing... if there is a W1 on the thermo and a W1 on the handler ?? Do I eliminate the W1 on the thermostat ???

Connections showing for the handler and the ourdoor unit:

Handler Outdoor Unit

Now if you notice on the Thermostat connections, it shows what each point controls. I wish I had a way to KNOW what each connection point on the handler also controlled so I knew what connections to make FOR SURE.

But if you can tell me what connections to make, I would gladly appreciate it. Just for info, the schematics for the handler and the unit do not point out what each connection controls, if so, I would be good to go. Once again, thanks for the help !!

[This message has been edited by Craz (edited July 17, 2003).]


12:19PM | 11/28/03
Member Since: 11/27/03
6 lifetime posts
Did you but a heat pump tstat or just a heating and cooling stat?????


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ... Built on a rocky island in the Drina River, near the town of Bajina Basta, Serbia, this wooden house was cobbled together ... Large steel-framed windows flood the interior of this remodeled Michigan barn with daylight. The owners hired Northworks A... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... A Washington State couple called on BC&J Architects to transform their 400-square-foot boathouse into a hub for family bea... Similar to the elevated utensil concept, hanging your pots and pans from a ceiling-mounted rack keeps them nearby and easy... For windows, doors, and mirrors that could use a little definition, the Naples Etched Glass Border adds a decorative flora... The thyme growing between these stepping stones adds a heady fragrance to strolls along this lush, low-maintenance garden ... Decoupage is an easy way to add any paper design to your switch plate, whether it is wallpaper, scrapbook paper, book page... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Reluctant to throw away any of those unidentified keys in your junk drawer? Hang them from a few chains attached to a simp... A stripped-down model, sans screened porch, starts out at $79,000. Add the porch, a heated floor for the bath, and all the... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... Need a window and a door in a tight space? A Dutch door with a window may be your answer. These useful doors are split hor...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon