Rinnai INFINITY REU-3203W, Руководство по обслуживанию

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Infinity REU-3203W - 36 - ©Rinnai
c.)
Disconnect relay connector ( J1) and ( J3)
and measure resistance between Yellow
and Yellow on Heat Exchanger Heater
side.
Normal: 825
Ω
If normal, proceed to Frost Sensing
Switch 18.
Faulty: Replace Anti-frost Heater A
(assy). [Measure when temperature is
4+/- 3
o
C.]
Note: If you cannot get the temperature
low enough, cool the low-temperature
sensing switch with ice etc.
18.Frost Sensing Switch.
a.)
Disconnect relay connector ( J
2
) and
measure resistance between Blue and
Blue.
Normal: < 1
Ω
If normal, check wiring (AC240V cir-
cuit).
Faulty: Replace Frost Sensing Switch.