Honeywell Programmable Thermostat Heater "boilers" Questions

The wifi connection from worcester boiler to room thermastat Honeywell Cm921 , boiler not receiving signal Boiler ok. firing up, no poblem, batteries in thermostat had to be changed, consequently lost

My Smartfit room unit is showing no fault codes but boiler wont cut in I have no power at PL in control box or at L on boiler Boiler make and model???? To which control box do you refer? The system ...

Hi, I have a drayton lp522 programmer with a Hi, I have a drayton lp522 programmer with a potterton boiler. The hot water side works fine but when I turn on central heating the boiler does not fire up

boilers heats up to temperature then cools down then heats up Check the aquastat...this is the boiler temperature control on most boilers. would need to know what model your boiler is.

Thermostat is not switching on boiler. Boiler is supplying hot water. Timer controller is working. But thermostat is not switching on the boiler for heating, even though it is showing the flame symbol

St 9400c keeps cutting out and turning on rapidly boiler will not heat properly rapidly? seconds or minutes. Make sure you select hot water boiler in the thermostat setup. That can cause short cycling

Only the boiler is hooked up to the RTH221. The Rh terminal is connnected to the Rc terminal with a jumper wire. It is a very tight fit to get the boiler wire in that terminal with the jumper wire ...

Hi, I have a baxi solo boiler WM60/4RS and a Landis & Gyr RWB252 timer but my Honeywell T6160 thermostat has nether been connected, can anybody shed light on the wiring connections please. Wiring ...

Installing CM900 Honeywell into Junior 24 Bosch Combi The honeywell manual wants me to connect 2 wires from points A and B in the honeywell to points labelled T1 and T2 in the boiler. The boiler ...

boiler is a baxi control for heating is honeywell. boiler is a baxi ,control for heating is honeywell. central heating works but no hot water coming out of boiler? this will be your diaphram inside ...