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Electrical Circuit

HT3

HT3 Vertical White Unit
HT3 Vertical Black Unit
HT3 separate parts

HT3 Programming Manual and Videos are below

The HT3 is an excellent full option thermostat that is easy to program and easy to install. The HT3 can be used as a new install or as a replacement for an existing thermostat.

The HT3 comes in three parts. The thermostat, the mounting block, and the electrical block. The thermostat attached to the electrical block via an electrical ribbon.  The electrical block acts like a circuit breaker for an electrical surge. The electrical block is the part likely to be affected by an electrical surge and can be replaced without having to buy another thermostat.

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The HT3 comes in four different options:

  • Vertical White

  • Vertical Black

  • Horizontal White

  • Horizontal Black​

All Heatwell thermostats come with a 2-year warranty.  All thermostats are tested in NZ, and come pre-set. 

Products Specs Modes: Manual Program Manual override ​Settings: (F) Floor probe (A) Air Sensor (AF) Air Sensor + Floor Probe ​Possible schedules: 7 day 5 + 2 day Single day ​Programmable: 2 time periods per day ​Time: 24-hour clock 12-hour clock ​Lockable ​Standby battery Touch screen ​ Dimensions: 12cm x 8cm x 1.8cm ​Weight: 0.3kg ​Volts - electrical block: 230-240 VAC ​Volts – thermostat: 5V ​Max Capacity: 16 Amps ​Maximum temp: 40 degrees Celsius ​Minimum temp: 5 degrees Celsius ​Frost Protection: 3 degrees Celsius ​Floor probe options (kohms): 3 / 10 (default) / 15 / 25 / 50 / 100

HT3 Manual - Downloadable PDF

HT3 Programming Videos

Programming the HT3

Please watch the following video to understand how to operate the HT3

HT3 Setup - Parameter Settings

Please watch the following video when setting up the HT3, or if you need to reset some parameters due to an error.

Parameter settings should not be adjusted during day to day operation​

Problem Solving

Please watch the following video when you are having issues with the operation of the HT3.  Specifically if the FT (Floor Temperature) or RT (Room Temperature) seems too high, or the ET error is showing

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