Why Does My Honeywell thermostat say faulty sensor?

If the thermostat spent time in a low humidity environment, such as a cold car or van, warehouse, or the installation location has lower than 10% humidity, the 9000 series can show ‘sensor failure’ until the ambient humidity rises.

How do you do a bump test?

Alternatively, you can perform a manual bump test simply by applying gas to the instrument while it is on the main gas reading screen. If each sensor shows readings in response to the gas and the detector goes into alarm, then that instrument is good to go.

How do I reset my Honeywell indoor sensor?

First, reset the sensor by pressing and holding the Connect button on the sensor for about 15 seconds, then, with the sensor within 2 feet of the thermostat, try adding it again. Next, if you’re still having issues, replace the sensor batteries and retry.

How often do h2s monitors need to be bump tested?

Electrochemical sensors tend to drift over time and require bump testing every 3 to 6 months. Calibration is recommended annually or if bump testing indicates an out of spec sensor. Due to the technology of electrochemical sensors, they will deplete over time and more rapidly if exposed to the target gas.

What’s the difference between bump test and calibration?

The main difference between a bump test and calibration is that a bump test determines whether a DRPGM can detect if a possibly hazardous gas is present, while calibration checks that equipment is accurate.

How do I calibrate my Honeywell h2s gas detector?

How-to: BW Honeywell Gas Detector Calibration

Step 1 Organize.
Step 2 With the monitor in regular operating mode, hold down the off button.
Step 3 Once the sensors have auto-zeroed, the monitor will prompt you to apply the calibration gas.
Step 4 The monitor will begin calibration without further actions required.