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Installation & Servicing Instructions Rinnai E-Series
79
Signal maximum return water temperature
exceeded (T
2
>212°F).
check
actual return
temperature
check return
sensor NTC 2.
exchange defective
part if necessary.
Change control unit
when error persists
Increase of temperature cause by external
heating source?
measure the resistance value (see table)
Resistance table NTC-Sensors
15.2.13 Error 19
Temp NTC 12K
°F
(12k
:
/
77°F)
supply sensor T1
return sensor T2
DHW sensor T3
outside sensor T4
flue gas sensor T5
-4 98,000
-0.4 90,000
3.2 82,000
6.8 74,000
10.4 66,000
14 58,000
17.6 53,500
21.2 49,000
24.8 45,000
28.4 40,500
32 36,000
35.6 33,500
39.2 30,900
42.8 28,200
46.4 25,600
50 23,000
53.6 21,400
57.2 19,900
60.8 18,100
64.4 16,600
68 15,000
71.6 14,000
75.2 12,900
78.8 11,900
82.4 10,850
86 9,800
89.6 9,100
93.2 8,500
96.8 7,900
100.4 7,200
104 6,500
113 5,600
122 4,600
131 4,000
140 3,400
158 2,300
176 1,700
194 1,300
212 950