Noritz NRC661-DV, Руководство по обслуживанию, Страница: 45 / 78

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Check whether each connector (for SV0~SV3) on
.t u o s e m o c e v l a V s a G d n a e t a l P d l o fi n a M
Check the coil resistance* of each Gas Solenoid Valve.
(Which Gas So ) ? y ti l a m r o n b a s a h e v l a V d i o n e l
Check for improper connection of wiring, damage.
When measuring the resistance,
disconnect the connector and
check the male side .
Normal Abnormal
Failure of Gas Solenoid Valve
(or Gas Solenoid Valve drive circuit abnormality)
Error Codes
Description
51, 511 51
Display
Window
Remote
Controller
* It is not necessary to replace the
Display Window Circuit Board.
Normal Abnormal
Replace the Circuit Board.
Connect the connector.
Replace the Gas Valve.
SV0 abnormality
Replace the Manifold Plate.
SV1 or SV2 or SV3
abnormality
<Condition of occurrence for error code 51>
When the Unit is in following conditions, the error code is displayed.
- if the Gas Solenoid Valve's conections are improper.
- if the Gas Solenoid Valve's conections are damaged.
- Circuit Board failure.
* Coil resistance
SV0 : 20~35
SV1 : 35~65
SV2 : 35~65
SV3 : 35~65