For instance, candles placed too close to a thermostat can cause the thermostat to register a higher reading; a cold draft from a … Checking the calibration of your thermostat is easy and should be done once a year, typically in the fall. New Model No. It's off by about 4 degrees. Honeywell RTH8500D Temperature Calibration. Honeywell RTH8500D Temperature Calibration. We have 1 Honeywell TH8321U1006 - Touch Screen Thermostat manual available for free PDF download: Operating Manual . Close. If the offset temperature is set to 0 C degrees, that means it was not changed and the thermostat will read the room temperature as it was calibrated. T6360B re-calibrate,calibrate,remove plastic dial,T6360B, T6360, wired room thermostat Answer / Solution Describes the answer or the required steps that resolve the issue Obviously I could … 3. TP971A-E Thermostat Specifications. No there is no calibration on this thermostat but is there a draft coming from behind causing the difference in temps. Checking Thermostat's Calibration Step 1: Tape glass tube thermometer to wall a few inches away from thermostat. To do so, locate your home’s thermostat and tape an accurate thermometer on the wall next to it. Manuals and User Guides for Honeywell TH8321U1006 - Touch Screen Thermostat. Checking a Thermostat’s Calibration. TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS 3 75-7134—1 Table 1. Thermostat … If the thermostat is located in a particularly hot/cold location and cannot be moved because of wiring restrictions then the measured/displayed temperature can be adjusted by +/- 1,5°C. Room thermostat calibration & accuracy guide: this article explains why a room thermostat may not be responding correctly to the actual room temperature. Step 4: If thermostat has mercury vial inside, use level to make sure unit is straight. Two-month old Honeywell FocusPRO TH6000 Thermostat does not seem to be communicating with AC unit. Says it's 72 but it's actually 68. Calibrating old Honeywell "round" thermostats (for furnaces) harlan.b.braude: 11/20/92 8:20 AM: I need some calibration information for one of these thermostats. * (continued) Old Model No. Step 3: If variation is more than a degree, check to see if thermostat is dirty. There is power to both Thermostat and AC Unit. Step 2: Wait about 15 minutes for mercury to stabilize. Check the area around the thermostat for elements that might be interfering with an accurate temperature reading, and remove or fix them. * Table 2. https://www.abchomeandcommercial.com › blog › calibrate-thermostat Posted by 2 years ago. TP970A-D Thermostat Specifications (continued). Factors that affect the room thermostat's behavior include is location in the building, for some models how level the thermostat was installed, the thermostat's heat anticipator adjustment, even dust and debris in or on the thermostat. Calibrating old Honeywell "round" thermostats (for furnaces) Showing 1-4 of 4 messages. Archived. Wait 15 minutes and check the temperature reading on both devices. Anybody know how I would calibrate my thermostat?