Rheem 70103 - Fault Finding Tests 3 B - 6 A

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TM063 701, 702 & 703 Series Boiling Water Unit Service Instructions
Revision D: Feb 2017
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Fault Finding Tests 3B – 6A
Test 3B (25 & 40L models)
Test 4
Using a multimeter on the AC voltage scale,
measure between the Active and Neutral
terminals on the control board. The following
result should be obtained:
Control board Active to Neutral –
230-240 Volts AC.
Disconnect the boiling water probe at
control board and remove probe from
housing. Using a megger on the 500V scale,
megger between the probes of the level probe.
The following result should be obtained:
> 1 Mega-ohm.
Test 5A (3 – 15L models only)
Test 5B (25 & 40L models)
Disconnect the red wire from the boiling water
element E.C.O. and using a multimeter on the
ohms scale, measure between the terminals of
the boiling water E.C.O. The following result
should be obtained:
0 ohms (E.C.O. has not tripped).
Disconnect the red and blue wire from the
E.C.O. and using a multimeter on the ohms
scale, measure between the L1 and L2
terminals, and the N1 and N2 terminals of the
E.C.O. The following result between should be
obtained:
L1-L2: 0 ohms (E.C.O. has not tripped).
N1-N2: 0 ohms (E.C.O. has not tripped).