Unit installation

MAINTENANCE AND TROUBLESHOOTING (cont’d.)

Figure 17: Control Panel

Troubleshooting

Problem Probable Cause Solution

Unit will not turn on Thermostat set point too low. Turn dial in clockwise direction to increase temperature set

point.

Improper or loose wire connections. Check control and power circuit to make sure they are wired

properly and for any loose wire connections.

Disconnect switch in off position. Make sure disconnect switch is in “on” position by turning it

in the clockwise direction.

Tripped circuit breaker or blown fusing

(located remotely from unit).

Check to see if circuit breaker has been tripped or replace

fusing.

Blown internal fusing (located on units

rated above 48 amps).

Replace fusing as needed.

Unit not producing heat Thermostat set point too low. Turn dial in clockwise direction to increase temperature set

point.

Summer fan switch is set to “Summer”

mode or wired incorrectly

If a summer fan switch is installed, check to make sure it is

switched to the “Winter” setting. Check to make sure wires

on switch are not reversed.

Element Failure Element failure can be conﬁrmed by performing a continuity

test or by measuring the elements resistance.

Unit turns off suddenly or cycles

off before reaching temperature

set point

Low airﬂow is causing automatic reset

temperature cutout on elements to activate.

There are several reasons for low airﬂow and most of them

can be easily corrected.

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air in a room. This can cause the ambient temperature

around the heater to exceed the maximum rated operat-

ing temperature. The problem can usually be solved by

mounting the heater at a lower height.

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the fan. Check that the fan motor is rotating in the coun-

terclockwise direction.

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any objects located too close to the inlet or outlet.

Low airﬂow is causing motor thermal

cutout to activate.

Heat Tracing Sales Mount Airy, Maryland USA 410-795-2223 sales@heattracingsales.com