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I am trying to install T5 + wifi thermostat. I am replacing
I am trying to install T5 + wifi thermostat. I am replacing a Honeywell older round thermostat. The system is just heat, hot water baseboards with a boiler. There are only two wires connected to the e… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
10,410 satisfied customers
Just installed a Honeywell RTH111 on a hot water baseboard
Just installed a Honeywell RTH111 on a hot water baseboard system I set the temperature it calls for heat and overshoots the set temperature and just keeps climbing well over set temp the heat on ligh… read more
Rick
Rick
HVAC Supervisor
29,636 satisfied customers
I have an MGB boiler system in our house (no AC) that has a
Hey Rick - I have an MGB boiler system in our house (no AC) that has a Honeywell S8600M Intermittent Pilot control unit. We have older programmable thermostats controlling upstairs and downstairs hot … read more
Rick
Rick
HVAC Supervisor
29,636 satisfied customers
I have a Honeywell RTH6350 programmable thermostat. I only
I have a Honeywell RTH6350 programmable thermostat. I only have three wires. I am trying to replace this unit with a Honeywell Lyric T5 Wi-Fi thermostat. The wire colors at the the existing thermostat… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
10,410 satisfied customers
I have a evolution thermostat that has 4 wires in slots
I have a Bryant evolution thermostat that has 4 wires in slots marked ABCD (green, orange, white and red wires). Want to get a compatible wifi thermostat. Can you recommend which ones will be compatib… read more
Charles Bodenheimer
Charles Bodenheimer
Owner
Associate Degree
162 satisfied customers
Rick, I am having issues with a similar question you already
Hi Rick, I am having issues with a similar question you already answered in reference to installing a wifi Honeywell thermostat. This model is RTH6580WF, connecting to a gas fired heating boiler with … read more
Rick
Rick
HVAC Supervisor
29,636 satisfied customers
I am trying to connect my wifi honeywell tstat, have
I am trying to connect my wifi honeywell tstat, have connected the wires to the correct terminals. I have the system set to heat and the condenser is kicking on. There are three zones in the house and… read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
10,410 satisfied customers
I am trying to install a Honeywell WiFi Thermostat with a EWC
I am trying to install a Honeywell WiFi Thermostat with a EWC NCM 300 Zone control system. The current Thermostat is a programmable thermostat that is battery powered and your system requires 24V cons… read more
Theplumber717
Theplumber717
Plumber
Vocational, Technical or Trade Scho
1,265 satisfied customers
Replacing Honeywell Troy a TEmp w/an hz311. Will the
Replacing Honeywell Troy a TEmp w/an hz311. Will the existing tool a temp thermostats work with this system? Zone 2 came up calling for cool on the hz311 and I have heat only. I bought a homeywell ret… read more
jHVAC
jHVAC
131 satisfied customers
hi Douglas I am looking to replace my programable thermostate (Honeywell CT8602 with a ne
hi Douglas I am looking to replace my programable thermostate (Honeywell CT8602 with a newer wifi type. The one I am replacing is a master zone compatible as I have a slave thermostat in another room … read more
Douglas
Douglas
Vocational, Technical or Trade Scho
3,118 satisfied customers
I want to install the Wifi Thermostat RTH8580WF. I have no
I want to install the Wifi Thermostat RTH8580WF. I have no C wire options - wiring is R and W only and running new cable is not an otion. However, an external transformer is a possibility. Some other … read more
Douglas
Douglas
Vocational, Technical or Trade Scho
3,118 satisfied customers
I have purchased the Honeywell CM927 Wireless Programmer and
I have purchased the Honeywell CM927 Wireless Programmer and Relay to use on a Y Plan system. I think I have sorted most things but am a bit stuck on how to wire the relay switch to the wiring centre.… read more
Andrew Smith
Andrew Smith
M&E Project Manager
Vocational, Technical or Trade Scho
3,084 satisfied customers
Honeywell T8001c 1019 thermostat. For what ever reason I cannot
Honeywell T8001c 1019 thermostat. For what ever reason I cannot gete this instrument to operate my zone valve and micro switch. Wiring on the base plate is red/red/ -white/c jumper between C and W… read more
Bart Jay
Bart Jay
Vocational, Technical or Trade Scho
Just getting new boiler installed. We have open vented system
Just getting new boiler installed. We have open vented system so have EcoTEC 428 boiler with S-plan for CH/DHW (2 zone valves), Timer 140 fitted in boiler fascia, honeywell cyl stat, Grundfos pump, an… read more
Rick Ridley
Rick Ridley
Retired, well Semi,
30 years on the tools
2,707 satisfied customers
I need a wiring diagram for a LP522 used in conjuction with
I need a wiring diagram for a LP522 used in conjuction with a Glow worm HXI 15. The system is fully pumped mid position with pump over-run. A Siemans Flow minder,Honywell T6360B room stat and Poterton… read more
Rick Ridley
Rick Ridley
Retired, well Semi,
30 years on the tools
2,707 satisfied customers
I am trying to replace a White-Rodgers 1E35-910 thermostat,
I am trying to replace a White-Rodgers 1E35-910 thermostat, connected to a White-Rodgers 1311-102, with a Honeywell RTH2310. The current thermostat has 3 wires: Red, White, Green. Red is connected to … read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,442 satisfied customers
I recently replaced my old style (round) Honeywell thermostat
I recently replaced my old style (round) Honeywell thermostat with a HW Programmable Model - RTH230B. The old thermostat was used as the master (control) unit for a 3 zone heating system. It had two s… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,442 satisfied customers
i have a s plan heating system and it works fine but ive just
i have a s plan heating system and it works fine but i've just noticed that i can only turn the heating off by turning the thermistat down and it works with the programmer switched off. we had a fault… read more
alex hewitt
alex hewitt
Vocational, Technical or Trade Scho
60 satisfied customers
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