Rheem 325 II Series Service Instructions Manual page 49

Component Tests 2 – 5
Remove the top electrical cover from the
storage tank and using a multimeter set on
the AC voltage scale, measure between
terminals 1 and 3 on the thermostat.
Normal voltage is 240V AC.
Using a multimeter set on the resistance
(ohms) scale, measure between terminals
1 and 2 on the thermostat.
Normal resistance when the thermostat is
closed is 0 – 1Ω.
TM077: 325 & 410 Series II Heat Pump Service Instructions
Rev 00: Issued April 2014
This document is stored and maintained electronically by
Test 2
Test 4
Test 3
Using a multimeter set on the resistance
(ohms) scale, measure
terminals of the mechanical thermostat.
The following results should be obtained
when the ECO is closed:
1 & 2: 0 – 1Ω
3 & 4: 0 – 1Ω
Test 5
Remove the front cover from the heat
pump module and using a multimeter set
on the AC voltage scale, measure between
the active (red) and neutral (blue) terminals
of the mains plug at the controller.
Normal voltage is 240V AC.
Service. All printed copies are deemed uncontrolled.
between the
240
49