Honeywell Heating & Cooling - Recent Questions, Troubleshooting & Support


Probably heating element or temperature control circuit failure

Honeywell... | Answered 3 days ago


When switched on power is supplied to the heating element until the temperature reaches that which the thermostat is adjusted to and then the thermostat switches off the power to the element.

Whether electro-mechanical or electronic the thermostat isn't doing the job and as it is a digital control electronic thermostat that seems dead, I guess that is the part that needs repair or replacement.

Honeywell HZ-709... | Answered on Nov 12, 2019


Okay first i replaces the battier so now its reading 17.5 its not gaving me the right temperture

Honeywell... | Answered on Nov 06, 2019


On a Honeywell thermostat the flashing means that the system is in a delay to turn on the compressor. This is used to protect the compressor from coming on and off too often. The normal delay is about 5 minutes. After that the system should come on. If not there is s problem.

In order to help us help you we will need a little more information. What happens either at the inside unit or at the outside unit after the thermostat stops flashing "Cool"? Any fans come on? Do you hear a "KLUNK"? Any sparks? Please let us know so we can help.

Honeywell... | Answered on Oct 30, 2019


Thermostats have multiple issues when you start checking them against thermometers.

1) the built-in thermometer may not match the set temperature because one or both need calibration. Compare the built-in to an external thermometer and see if there is any adjustment to make them match. Record the setting on the thermostat and the temperature when it starts and stops -- there should be a 1-3 degree range which may be adjustable. The set point should be in the middle of the on-off temperature spread.
2) the thermostat has a heat anticipator setting which may be set poorly -- turning off the heat before it reaches the set point - the fan normally runs for 1-2 minutes after the heat source is off. The anticipator is used to stop heating before reaching the set point as there are still a lot of BTUs coming out during the fan run-down -- usually 1-2 minutes.

Honeywell... | Answered on Oct 16, 2019

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