Rinnai REU-VR2426WS Solar 26, Руководство по обслуживанию

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REU-VR2626WB (B26) /REU-VR2426WS (S26) /REU-VRM2626WG (INF26) - 23 - Issue 3 - 13/11/14 ©Rinnai
8. Flame Rod Circuit
Operate appliance and check flame rod ( I
3
)
Check Dc current flow between yellow flame rod wire and earth is over DC1µA
Disconnect flame rod terminal ( I
3
), and re-operate appliance.
“72” indicated:- Proceed to c) .
“72” is not indicated:- check for electrical leaks from the flame rod circuit.
Measure voltage between flame rod terminal ( I
3
) and appliance earth.
Normal: >1M

If normal, Check all power inputs into PCB. If power inputs okay replace PCB.
If resistance abnormal replace flame rod.
a) Remove the Flame Rod terminal ( I
3
) repeat appliance operation procedure, if “72” is displayed
again check the Hot water outlet thermistor.
If “72” is not displayed check current leakage from the Flame Rod.
b) Measure voltage between body earth and Flame Rod terminal ( I
3
).
Normal: voltage AC100~160V
If normal, check all power inputs into PCB. If power inputs okay replace PCB.
Faulty: Replace Flame Rod.
c) Check if the Flame Rod is securely fitted.
Normal: Check all power inputs into PCB. If power inputs okay replace PCB.
Faulty: Adjust the fitting of the Flame Rod.
Check all appliance earth connections are clean and secure.
9. Thermal Fuse Circuit
Check the Thermal Fuse.
Disconnect relay connector (
I
1
) & ( E
1
) measure resistance between:
(16 Series) - White-Red
(20 Series) - Black-Red
(24/26 Series) - Blue-Red.
Normal: < 1

If normal, replace PCB.
Faulty: Replace Thermal Fuse if after confirming there is no damage to appliance.
10. Water Flow Sensor
a) Measure voltage between Red-Black of relay connector ( E
2
).
Normal: 11~13VDC
If normal, proceed to b).
Faulty: Replace PCB.
b) Measure voltage between Yellow-Black of relay connector ( E
2
).
Normal: 4 ~ 7 VDC
If normal, proceed to 2.
Faulty: Replace water flow sensor.
Note: For controller readout of water flow whilst operational refer maintenance monitor.
(Chapter 15) No. 1.