Temperature sensor was not installed

The high limit temperature sensor is intended for two purposes, either as a slab sensor when the APS-C series unit is used for heating sidewalks, patios or drives or for ambient air temperature when the unit is used for roof and gutter melt...

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Why is my heater light flashing?

A flashing supply light on any APS or EUR-5A control indicates a missing or broken High Temperature Limit sensor. This sensor is required to make the EUR-5A controller to work. The sensor is not polarized and must be connected to pins 1 and 2. Refer...

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When the system was installed the high temperature sensor was not installed, can I still make the unit work?

The High Temperature limit sensor is intended for two purposes, either as a slab sensor when the EUR-5A is used for heating sidewalks, patios or drives ways or for ambient air temperature when the unit is used for roof and gutter melt systems.

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Why doesn’t adjusting the High Temperature Limit dial turn the unit on?

The High Temperature limit dial is used to set the maximum temperature that the unit will work at. When the High Temperature limit sensor detects a temperature higher than what is selected on the EUR-5A high temperature dial it overrides the system...

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Set Your High Temperature Limit Control

Mary in Ohio upgraded the snow and ice melting system for her driveway with the Environmental Technology Inc. Snow Switch Model APS-3C control. The earlier version of her control panel did not include a HIGH TEMPERATURE LIMIT control setting. She...

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When the system was installed the high temperature sensor was not installed, can I still make the unit work?

The high temperature sensor is intended for two purposes, either as a slab sensor when the EUR-5A is used for heating sidewalks, patios or driveways or for ambient air temperature when the unit is used for roof and gutter melt systems.

read more

Why doesn’t adjusting the High Temperature Limit dial turn the unit on?

The high temperature limit dial is used to set the maximum temperature that the unit will work at. When the High temperature limit sensor detects a temperature higher than what is selected on the dial it overrides the system and shuts it off. This...

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