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Suburban SW3P Service Manual page 9

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C. Electric System
1. Electric Thermostat And Element
Electric water heaters are designed to operate with a minimum amount of service problems. The
most common trouble with electric water heaters results from energizing the heater before it is
filled with water.
Check the followina items:
a) Check the circuit breaker in the coach to make sure it has not tripped.
b) Check for 120-volt AC to the ONIOFF switch (lower left hand corner of the control pan) on
gadelectric water heater. If voltage is present on one side of the switch and the heater still doesn't
work, replace switch.
c) Press the reset button on the heater. Located in the control pan.
d) If, after pressing the reset button and turning the power back on, the heater still fails to operate,
turn off the power and check all wire connections.
e) After the first four steps have been followed, the heating element should be checked for
continuity with a voltmeter or other testing device. If defective, replace the element.
If the water heater becomes too hot and activates the reset control, push the reset switch pad.
In cases, where the water is too hot and the high limit control is not shutting off the heater, it is
possible that the thermostat is loose from its bracket and is not being held tightly against the tank.
"V"
Model
WIRING DIAGRAM (120 VAC)
SW Model
- -
ROBERTSHAW
THERMOSTAT ONLY
If
any of the
origlnal wire
as
supplied
with
th
heater must
be
replaced. It must
be replaced with
14
GA.
105
C
Ire
or Rs
equbalent
n

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