Replacing Johnson Control with Honeywell RTH8500
http://www.diychatroom.com/images/icons/icon8.gif Installing Honeywell RTH8500 to replace Johnson control T210hp-10
It should be simple, that's what they claim.....:mad:
The wire coming from the wall are labelled as follow:
I used the wiring diagram from page 12 (Installation Guide) that says:
R connect to Rc & R leave metal jumper in place,
O to O/B
Y1 to Y
C to C
X to E
W2 to Aux
Power back heat pump and furnace, set time and temp, :censored: doesn't work!!!!
Actually, HeatPump works, but fan in the central furnace doesn't?
Thanks in advance... I leave computer on to heat up the house:laughing:
down on the air handler do you see a G terminal wired in.....and is it going up to the subbase.thats a heatpump but the "air handler" is just that, or is it a furnace with gas?does the old stat,and new stat both have FAN ON/AUTO on that subbase? does the subbases have a G terminal?
Also, did you make sure to set up the Thermostat for your unit, and not just hook it up and put in the batteries? There is a little more to do with the Honeywells, then just open the box and connect.
FROM BIGGLES: down on the air handler do you see a G terminal wired in.....and is it going up to the subbase.thats a heatpump but the "air handler" is just that, or is it a furnace with gas?does the old stat,and new stat both have FAN ON/AUTO on that subbase? does the subbases have a G terminal?
I HAVE TO OPEN UP THE UNIT, I WILL CHECK AT LUNCH (12H35)
AND YES, GREGZOLL, I PROGRAMMED THE UNIT, AFTER FINDING HOW BY A LOT OF READING i.e. center bottom key.
WIL SEE LATER TODAY, TEMPERATURE IS AROUND -8C SO NOT TO WORRY NOW...
THANK YOU BOTH, I WILL KEEP CHATROOM POSTED1:thumbup:
I spoke to my serviceman, I had to make appointment for annual PM,
he told me to make sure GREEN or X wire is connected to G on HONEYWELL. No charge!!!
And now it works perfect.
I will post complete programming later.
Thanks every one, happy heat...
configuration so far and it work:
fonction =>> setting
the rest is personnal ¤C, hour in 24h
Thank's again for the support.
the only difference with the G/FAN is in cooling mode it calls in from the stat,and on a heat pump there might be a time delay when your heating thru the air handler.brands differ on that one.good luck up north there
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