Bosch ZBR 42-3 A NG User Manual

Faults
77
Greenstar – 6721822579 (2021/01)
17.4 Check sensor values
17.4.1 Outdoor temperature sensor
Table 38 Resistance table outdoor temperature sensor
17.4.2 Additional supply temperature limiter
Table 39 Resistance table supply temperature limiter
17.4.3 Supply temperature sensor, External supply temperature
sensor, DHW tank temperature sensor, DHW temperature
sensor
Table 40 Resistance table NTCs
17.5 Replacement code plug
Table 41 Code plugs for all appliances
Temperature °F ( °C )
Testing tolerance ± 10%
Resistance []
– 4 ( – 20) 2,392
3 ( – 16) 2,088
10 ( – 12) 1,811
17 ( – 8) 1,562
24 ( – 4) 1,342
32 (0) 1,149
39 (4) 984
46 (8) 842
50 (10) 781
59 (15) 642
68 (20) 528
77 (25) 436
Temperature ( °F) °C
Measuring tolerance ± 10%
Resistance [  ]
32 (0) 33,555
50 (10) 21,232
68 (20) 13,779
86 (30) 9,128
104 (40) 6,205
122 (50) 4,298
140 (60) 3,025
158 (70) 2,176
176 (80) 1,589
194 (90) 1,177
212 (100) 886
Temperature °F ( °C)
Testing tolerance ± 10%
Resistance [  ]
68 (20) 14,772
77 (25) 11,981
86 (30) 9,786
95 (35) 8,047
104 (40) 6,653
113 (45) 5,523
122 (50) 4,608
131 (55) 3,856
140 (60) 3,243
149 (65) 2,744
158 (70) 2,332
167 (75) 1,990
176 (80) 1,704
185 (85) 1,464
194 (90) 1,262
203 (95) 1,093
212 (100) 950
Appliance Order number
ZBR 21-3 A NG 8 714 432 528 0
ZBR 21-3 A LPG 8 714 432 529 0
ZBR 28-3 A NG 8 714 432 502 0
ZBR 28-3 A LPG 8 714 432 507 0
ZBR 35-3 A NG 8 714 432 503 0
ZBR 35-3 A LPG 8 714 432 508 0
ZBR 42-3 A NG 8 714 432 504 0
ZBR 42-3 A LPG 8 714 432 509 0
ZWB 28-3 A NG 8 714 432 520 0
ZWB 28-3 A LPG 8 714 432 521 0
ZWB 35-3 A NG 8 714 432 524 0
ZWB 35-3 A LPG 8 714 432 525 0
ZWB 42-3 A NG 8 714 432 500 0
ZWB 42-3 A LPG 8 714 432 505 0

Bosch ZBR 42-3 A NG Specifications

General

Brand	Bosch
Model	ZBR 42-3 A NG
Category	Boiler
Language	English