O Identify and label each wire (with the corresponding letter on the wire terminal) and remove them from the terminals.
Heating power supply Cooling power supply Heating signal Cooling signal Fan /4.
However, if that screen goes blank, you cant do any of this.
Identify and label each wire (with the corresponding letter on the wire terminal) and remove them from the terminals.Power Disruption, if your thermostat is wired directly into your homes electrical system, a blank screen indicates there is no power going to the unit, which means there may be a tripped breaker or a problem with the wiring.N Remove the old thermostat to access the wires.If necessary, strip the end of each wire (maximum of 1/4 inch).If the hole in the wall is too big, insulate it using a non-flammable material in order to avoid air draughts behind the thermostat.2.2 Installing the New Baseplate, for a new installation, choose a location approximately 5 feet (1.5 m) above the floor and on an inside wall.Mark and bore the appropriate mounting holes (or use the existing holes).R Pass the wires through the opening of the baseplate and fix the baseplate to the wall using the screws provided.The jumper must be used in 3- or 4-wire installations if you wish to use the mode selector switch for the fan.
Installation.1 Removing the Old Thermostat, iN order TO avoid ANY risk OF electric shock, CUT.
Your thermostat is the control center for your hvac system.
RTH230B /6/05 1/4, the RTH230B programmable thermostat can be used to control: a gas, fuel oil or electric furnace - 2 or 3 wires a central air conditioner - 2 or 3 wires a hot water system with or without pump - 2 wires.Fan operating mode selection: automatic or on (continuous).This is easily fixed by removing the cover on the wall unit and replacing the batteries.Programmable heating and cooling cycle lengths: 10, 12, 15, 20 or 30 minutes, temperature display in F.Q Mark and bore the appropriate mounting holes (or use the existing holes).Remove the old thermostat to access the wires.Warning: If the old thermostat was mounted onto an electrical box, patrick suskind perfume ebook it was probably powered by 120/240 volts.Avoid draughty areas (top of staircase, air outlet, etc.Loosen the locking screw to separate the thermostat from its baseplate (the screw cannot be completely removed).