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,...
Read MoreWhy 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...
Read MoreWhy is my heater light flashing?
A flashing supply light indicates a missing or broken High Temperature Limit sensor. This sensor is required. The sensor is not polarized...
Read MoreWhat is the difference between the 277 single phase unit and the 277/480 three phase unit?
The difference is the step down transformer that provides the power for the internal circuitry. On the 277 single phase the transformer is...
Read MoreCan I use the APS-4C to drive external contactors for more circuits?
No. Doing so will cause the GFEP circuit on the APS-4C to detect the inductive load of the contactor coil as ground fault and alarm the...
Read More
