2. This may damage the thermostat and void your warranty. All wiring must conform to local codes and ordinances. — area around thermostat for drafts or radiant heat. Not calling for heat. Either of these conditions can cause the thermostat to malfunction. I had a room added on to my house over the summer and a PurePro D110 thermostat was installed, but no directions were left with it. There is a lock icon in the display. Check it with a small torpedo level. Leave jumper connecting RH to RC. If your thermostat is broke, you can purchase a new one at most home improvement stores for a fairly reasonable price. Contact qualified sen/ice technician for change of location. Three wires for forced air heat only system, where the previous thermostat did not have a clock or timer: The previous RH or RC wire is the 24-volt transformer wire. Pure pro thermostat. Do not locate the thermostat where unusual heating or cooling conditions may be present, such as: direct sunlight, above a lamp, If that is the case, you’ll need to move the thermostat to a better location. New batteries. Not only are they highly efficient, but they can also save you money by heating water only on-demand. Clock does not run. If the unit is a commercial heat pump, it may not require a heat pump thermostat, so step 3 should be turned OFF. The thermostat should be limited to a maximum of 1.5 amps; higher current may Use a spirit level. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. It works OK, but I don't think I am getting the most efficient use from it because I am not sure exactly what the unmarked slide switch controls. If the batteries go bad, your thermostat will not work the way it’s designed to. equipment side (not at the thermostat!) Reinstall thermostat wallplate or subbase. between W and C. 3) Unit running backwards – cooling on heat demand, heating on cool demand – the heat pump setting is wrong – go to setup step 3 and change the heat pump setting. Although uncommon, issues can arise if something isn’t working correctly within your water heater. Unknown model - Answered by a verified HVAC Technician. Thermostat should be about 5 ft (1.5m) above floor on an inside wall. 3. Mount the thermostat on an inside wall, about 5 ft. (1.5m) above the floor. It can not be adjusted up or down in the heat mode. 5 If you have a mechanical (not electronic/ programmable) thermostat, be sure it is mounted level on the wall. — calibration of thermometer. Purepro. You’ll also want to check the batteries in your thermostat from time to time. Connect it to RH. Here are six of the most common problems and maintenance concerns for tankless water heaters: Mineral Buildup; I have a luxpro psp511LCa thermostat. Check the manufacturer’s product manual to adjust the cycle time. Connect the forced air heat system to W1, and the fan wire to G. Replace the batteries in the Luxpro thermostat if the unit is heating or cooling above or below the set temperature or does not turn off as expected. Do not locate the thermostat where air circulation is poor such as in a corner, alcove, or behind a door that is normally left open. How it got there I don't know, but think if I got rid of it it might work … read more Do not short (jumper) across electric terminals on furnace or air conditioner to test the system. We use cookies to give you the best possible experience on our website. If it’s an outdated thermostat, consider replacing it with a newer model. 1. Do not turn electricity back on until work is completed. I have tried to find a manual online, but have had no luck. Make sure the thermostat isn’t near doors to the outside or in an area with full sunshine. 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