Espar Heater Systems released the Multi-Max F1000 and the Digi-Max D1000 heater controllers for a range of Espar bunk heaters and engine pre-heaters.

The Multi-Max F1000 serves the needs of the Hydronic line of engine coolant heaters and the Digi-Max D1000 serves the needs of the Airtronic D2/D4 bunk heaters.

The Multi-Max F1000 gives fleets control over their fleet's pre-heat coolant heaters. By introducing a desktop programmer and a micro SD card slot, the Multi-Max provides tamper-proof control of every heaters' operating parameters based on each vehicle's individual work schedule.

The control can program a heater to have:

* As many as 4 distinct events per day, each with a different start and
finish time, triggered on whatever day of the week that vehicle is in use

* High-temperature disable set point

* Maximum manual run time

* Low-voltage disable set point

* Preferred PM Interval

* An exercise scheduler.

Through the micro SD card slot, those same settings can then be used to program one, or multiple vehicle heaters.

With the Multi-Max F1000, the controller's diagnostic indicator, a tri-colored LED light with a flash code, notifies drivers when the heater needs either routine or unscheduled attention. Once in the shop, that same flashing code tells them the fault code causing the problem.

The Digi-Max D1000 controller includes a larger display and features:
* Constant heater status display
* Temperature set point with either Celsius or Fahrenheit options
* A runtime countdown clock
* A "check heater" indicator

It also includes descriptive fault code messages, a programmable low voltage shut-off, a simplified menu, maximum run time limiter and customized PM schedule alerts.