Rinnai E110CN Installation & Servicing Instructions Manual page 78

15.2.12
Temp
°F (12k /77°F)
supply sensor T1
return sensor T2
DHW sensor T3
outside sensor T4
flue gas sensor T5
-4
-0.4
3.2
6.8
10.4
14
17.6
21.2
24.8
28.4
32
35.6
39.2
42.8
46.4
50
53.6
57.2
60.8
64.4
68
71.6
75.2
78.8
82.4
86
89.6
93.2
96.8
100.4
104
113
122
131
140
158
176
194
212
Resistance table NTC-Sensors
78
Error 18
NTC 12K
98,000
90,000
82,000
74,000
66,000
58,000
53,500
49,000
45,000
40,500
36,000
33,500
30,900
28,200
25,600
23,000
21,400
19,900
18,100
16,600
15,000
14,000
12,900
exchange defective
11,900
10,850
9,800 Change control unit
9,100
when error persists
8,500
7,900
7,200
6,500
5,600
4,600
4,000
3,400
2,300
1,700
1,300
950
Signal maximum flow water temperature
check actual flow
temperature
suddenly increase caused by completely
check flow
sensor NTC1
measure the resistance value (see table)
part if necessary.
exceeded (T > 212°F).
1
hydraulic shut off of the boiler (filter,
pump, thermostat valve, service valve)