Check Sensor Values; 17.4.1 Outdoor Temperature Sensor; 17.4.2 Additional Supply Temperature Limiter; Supply Temperature Sensor, External Supply Temperature Sensor, Dhw Tank Temperature Sensor, Dhw Temperature Sensor - Bosch Greenstar ZBR 16-3 A Series Installation And Service Instructions For Contractors

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 38 Resistance table outdoor temperature sensor

17.4.2 Additional supply temperature limiter

Temperature ( °F) °C
Measuring 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 39 Resistance table supply temperature limiter
Greenstar – 6721822579 (2020/03)
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 40 Resistance table NTCs
17.5

Replacement code plug

Appliance
ZBR 16-3 A NG
ZBR 16-3 A LPG
ZBR 21-3 A NG
ZBR 21-3 A LPG
ZBR 28-3 A NG
ZBR 28-3 A LPG
ZBR 35-3 A NG
ZBR 35-3 A LPG
ZBR 42-3 A NG
ZBR 42-3 A LPG
ZWB 28-3 A NG
ZWB 28-3 A LPG
ZWB 35-3 A NG
ZWB 35-3 A LPG
ZWB 42-3 A NG
ZWB 42-3 A LPG
Table 41 Code plugs for all appliances
Faults
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
77