Bosch T5700S 15 D 23 - User Manual

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LOW NOX INSTANTANEOUS

GAS WATER HEATER

ROOM SEALED FAN ASSISTED / PRESSURIZED

GAS WATER HEATER

FOR INDOOR INSTALLATION

TRAINING AND SERVICE INFORMATION FOR AFTER SALES

This document is restricted to exclusive use by the official service partners. Each

country should adapt the manual and its contents to the available range.

Other manuals for Bosch T5700S 15 D 23

Training And Service Information43 pages

Questions and Answers:

C
Christine AdkinsSep 12, 2025
What causes the 'Wrong gas type' error in my Bosch T5700S 15 D 23, and how do I fix it?
- M
  Michelle KramerSep 12, 2025
  If an output higher than expected is obtained, it indicates the wrong gas type is being used. The error is resolved by performing a manual reset.
J
justin86Sep 12, 2025
Why does my Bosch T5700S 15 D 23 Water Heater show an error related to the temperature limiter or thermal fuse?
- B
  Bridget RandolphSep 12, 2025
  If the temperature limiter detects a temperature over 85ºC, it causes the temperature limiter or thermal fuse to open the circuit. This error is resolved by manually resetting the system after the temperature limiter cools down and the contact closes again.
M
martinheatherSep 9, 2025
What does it mean when my Bosch T5700S 15 D 23 Water Heater displays MCU RAM DC (micro controller) internal error?
- M
  Michael Harper DDSSep 10, 2025
  Check if the voltage is too low (less than 70V AC). This error is resolved by a manual reset. If the voltage is okay and the error persists, replace the control unit.
D
diazmelissaSep 8, 2025
What to do if my Bosch T5700S 15 D 23 displays MCU registration DC (micro controller) error?
- M
  Melissa KingSep 8, 2025
  This error is resolved by a manual reset. If the error persists, replace control unit.
B
Brian Oliver MDSep 7, 2025
What to do if my Bosch Water Heater displays MCU ROM (micro controller) error?
- C
  Christopher CrawfordSep 8, 2025
  This error is resolved by a manual reset. If the error persists, replace control unit.
E
Eduardo JacksonAug 23, 2025
Why does my Bosch T5700S 15 D 23 show over-temperature detected?
- S
  Sean HarrisAug 23, 2025
  The control unit might be detecting an outlet water temperature exceeding 85ºC. This error is resolved by a manual reset.
K
kyle42Sep 5, 2025
What to do if my Bosch T5700S 15 D 23 displays an MCU PC (micro controller) instruction error?
- M
  manuel41Sep 5, 2025
  This error can be resolved by a manual reset. If the error continues, consider replacing the control unit.
J
Joseph RiddleSep 4, 2025
What to do if my Bosch T5700S 15 D 23 Water Heater displays a solenoid valve drive circuit error?
- K
  Kristopher SmithSep 4, 2025
  This error is resolved by a manual reset. If the error persists, replace the control unit.
C
Cheryl RichardsonSep 3, 2025
What to do if my Bosch T5700S 15 D 23 Water Heater displays an internal checking failure?
- B
  Barbara SmithSep 3, 2025
  This error is resolved by a manual reset. If the error persists, replace the control unit.
H
hurstaprilSep 2, 2025
What does it mean when my Bosch T5700S 15 D 23 displays a box temperature protection error?
- C
  Cynthia MooreSep 2, 2025
  This error indicates that the temperature inside the appliance box is over 70ºC. A manual reset is required to resolve the error.

Bosch T5700S 15 D 23 Specifications

General

Voltage	208/240 V
Thermostat	Electronic
Category	Tankless
Water Connection	3/4" NPT
Capacity	Tankless
Heating element	Copper
Phase	Single Phase
Temperature Range	30-60 °C