Check Sensor Values; Outdoor Temperature Sensor; Additional Supply Temperature Limiter; Supply Temperature Sensor, External Supply Temperature Sensor, Dhw Tank Temperature Sensor, Dhw Temperature Sensor - Bosch ZBR16-3A Series Installation And Service Instructions Manual

80 | Faults

17.4 Check sensor values

17.4.1 Outdoor temperature sensor

Temperature °F ( °C )
Testing tolerance 10%
– 4 ( – 20)
3 ( – 16)
10 ( – 12)
17 ( – 8)
24 ( – 4)
32 (0)
39 (4)
46 (8)
50 (10)
59 (15)
68 (20)
77 (25)
Table 40 Resistance table outdoor temperature sensor

17.4.2 Additional supply temperature limiter

Temperature °F ( °C)
Testing tolerance 10%
32 (0)
50 (10)
68 (20)
86 (30)
104 (40)
122 (50)
140 (60)
158 (70)
176 (80)
194 (90)
212 (100)
Table 41 Resistance table supply temperature limiter
6 720 806 992 (2015/03)
Resistance [ ]
2,392
2,088
1,811
1,562
1,342
1,149
984
842
781
642
528
436
Resistance [ ]
33,555
21,232
13,779
9,128
6,205
4,298
3,025
2,176
1,589
1,177
886
17.4.3 Supply temperature sensor, External supply temperature
sensor, DHW tank temperature sensor, DHW temperature
sensor
Temperature °F ( °C)
Testing tolerance 10%
68 (20)
77 (25)
86 (30)
95 (35)
104 (40)
113 (45)
122 (50)
131 (55)
140 (60)
149 (65)
158 (70)
167 (75)
176 (80)
185 (85)
194 (90)
203 (95)
212 (100)
Table 42 Resistance table NTCs

17.5 Replacement code plug

Appliance
ZBR16-3A NG
ZBR16-3A LPG
ZBR21-3A NG
ZBR21-3A LPG
ZBR28-3A NG
ZBR28-3A LPG
ZBR35-3A NG
ZBR35-3A LPG
ZBR42-3A NG
ZBR42-3A LPG
ZWB28-3A NG
ZWB28-3A LPG
ZWB35-3A NG
ZWB35-3A LPG
ZWB42-3A NG
ZWB42-3A LPG
Table 43 Code plugs for all appliances
Resistance [ ]
14,772
11,981
9,786
8,047
6,653
5,523
4,608
3,856
3,243
2,744
2,332
1,990
1,704
1,464
1,262
1,093
950
Order number
8 714 432 501 0
8 714 432 506 0
8 714 432 528 0
8 714 432 529 0
8 714 432 502 0
8 714 432 507 0
8 714 432 503 0
8 714 432 508 0
8 714 432 504 0
8 714 432 509 0
8 714 432 520 0
8 714 432 521 0
8 714 432 524 0
8 714 432 525 0
8 714 432 500 0
8 714 432 505 0
Greenstar