What is a changeover valve on a heat pump?
The changeover valve is a device which reverses the flow of refrigerant in the heat pump. This will allow the freon to reverse and heat the home or cool the...
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What is a changeover valve on a heat pump?
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How do I lock/unlock the screen TH4210U2002, TH4110U2005 thermostat?
The thermostat has 3 settings for the screen lock: Unlocked, Partial Lock, and Full Lock -Unlocked: All settings are adjustable -Partial: Setpoint changes are allowed. All other settings are locked...
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How do I lock/unlock the screen TH1110D2009. TH1010D2000 thermostat?
The TH1110D2009 and TH1010D2000 do not support a screen lock feature.
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How to Unlock the Screen on Z-Wave Thermostat
The thermostat has 3 settings for the screen lock: Unlocked, Partial Lock, and Full Lock - Unlocked: All settings are adjustable - Partial: Setpoint changes are allowed. All other settings...
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How do I lock the screen TH4210D, TH4110D, TH4110B thermostat?
The TH4210D, TH4110D, TH4110B does not support a screen lock feature.
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How do I lock the screen on my TH6110D1005, TH6220DXXXXX, and TH6320U100?
This thermostat does not support a screen lock feature.
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How do I locate the MAC ID on the detector?
MAC IDs are printed in the detector's battery compartment. Repeat the installation steps for each detector individually.
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How do I lock the screen on my RTH6350/RTH6450/RET93E/RET95E?
This thermostat does not support a screen lock feature. However, many of our WiFi thermostats (such as the T5 and T9), have this feature.
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How do I link additional Honeywell ActivLink motion sensors?
Press and hold the settings button until the amber light flashes. Set your motion sensor into walk test mode and trigger.
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How do I link additional Honeywell ActivLink door contacts?
Press and hold the settings button until the amber light flashes. Then, open the door contact battery cover to activate a tamper event.
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How do I link additional Honeywell ActivLink doorbell push buttons?
Press and hold the settings button on the doorbell until the amber light flashes. Then press the push button.
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How do I know which doorbells and push buttons are compatible?
Just look for an "E" on the box. Any Honeywell push button or doorbell with the "E" compatibility mark will work together.
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How do I know when to replace my humidification pad?
Honeywell recommends replacing your humidifier pad annually, at the start of the heating season. If you have hard water, you may need to replace the humidifier pad mid-season to maintain...
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