Espar series 5 heater control panel


don't have wiring diagram for the monitor and heater control panels. Not finding on Espar web site. Unit put out minimal heat and temporary luke warm water. Water, system, and furnace rocker switches light but water switch stays lit with switch off.
System pump works fine. Coolant tank (Full) under hood only get to about 110 degrees on shore power.
Diesel engine starts in turbo mode but does not go to low speed mode.
No errors on monitor panel.
Anyone have any wiring or instructions? What do the Furnace and water rocker switches do? System switch turns on circulation pump.

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