Rheem 874W27NF - Component Tests 24-26

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TM061 Rheem 27 Water Star Service Instructions – Issued: 11/10
REV A Issued 08/13
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Component Tests 24-26
Test 24
With the water heater plugged in and
switched on, use a multimeter on the AC
volts scale and measure between active
and neutral on the thermostat.
Normal voltage is 240 volts
Test 25
Using a multimeter on the x1 resistance
scale, measure between terminals 3 and
4 on the thermostat.
The reading should be less than 1Ω.
Test 26
Using a multimeter on the x1 resistance
scale, measure between terminals 1 and
2 on the thermostat.
The reading should be less than 1Ω.