Rheem RTGH-RH10DV - Page 22

22
Model
GB-220/210
HB-220/210:TemperatureThermistor
CheckPoint
(CircuitBoard)
CN7
Function
Monitorshotwatertemperaturesothattheunitcanadjustorturno󰘯theburnerwhenthe
measuredtemperaturerisesabovethesettemperature.
FailureEvent SensormalFeature
E󰘯ects Productdamageiscaused.
ErrorCode Er16,Er31,Er32,Er33,Er35,Er94
Diagnostic
①Checktheconnectionaroundthetemperaturethermistors.
②Measuretheresistanceacrossthethermistorbyusingamulti-meter.
Color/WireNumber
①HotWaterOutlet_GB-220(Yellow/Yellow):Connector③,⑩(Yellow/Yellow)
②DHWInlet_HB-220(Blue/Blue):Connector④,⑪(Blue/Blue)
③Exhaust_HB-210(Blue/White):Connector⑤,⑫(White/Blue)
④Operating_GB-210(
Black/Black)
:Connector②,⑨(
White/White)
DHWInlet(blue/blue)
Exhaust(Blue/White)
HotWaterOutlet(yellow/yellow)
NO Item Standard
1
Temperature –
Resistance Type
Idling Condition
Temperature Resistance(k
Ω
)
77 ± 0.2 °F
25 ± 0.1
℃
(8.520)
122 ± 0.2°F
50 ± 0.1
℃
3.485 ± 3%
185 ± 0.2°F
85 ± 0.1
℃
(1.250)
2
B Fixed Number
(25/85)
3481K ± 2%
Chapter2ComponentsDescription
NO Item Standard
1
Temperature –
Resistance Type
Idling Condition
Temperature Resistance(k
Ω
)
32 ± 0.2°F
0 ± 0.1
℃
(10.99)
122 ± 0.2°F
50 ± 0.1
℃
(3.906)
185 ± 0.2°F
85 ± 0.1
℃
0.552 ± 3%
2
B Fixed Number
(25/85)
3482.4K ± 2%
①②③④ ⑤⑥⑦
⑧⑨⑩⑪⑫⑬⑭
Operating(Black/Black)
►
Operating
thermistor - Wire color
(Black), Connector color (Black)
► Wire from PCB - Wire color (White),
Connector color (Black)