Bosch Evolution 500 Series Reference manual

Models: 715ES, C800ES, 2400ES, 2700ES, Evolution 500, Integra 500

Replacing the control unit

Service Bulletin G3-24

Introduction

Tools needed:

Phillips head screw driver

Small flat head screw driver

Needle-nosed pliers

Note: Avoid touching printed circuit board (PCB) as static discharge

may damage circuitry.

Preparation

Push power button to “OFF” and unplug power cord.

Loosen two Phillips head screws on bottom rear of front cover.

Pull cover bottom outwards then lift cover upwards to remove.

Removing control unit

Remove three Phillips screws on front of control unit. (Fig. 2,

pos. 1)

Turn control unit to expose the rear. (Fig. 2, pos. 2).

Locate and remove 6 Phillips head screws on back of control

unit (Fig. 2, pos. 3).

control unit front

Figure 2

Remove rear cover from control unit to expose circuit board

electrical connections. Slide wire restraints out of control unit.

(Fig. 3, pos. 1).

Remove two large electrical strip connectors by pulling them

away from board. (Fig. 3, pos. 2).

Remove medium sized electrical strip connector by pulling it

outwards. (Fig. 3, pos. 3).

Remove small electrical strip connector by pulling it outwards.

(Fig. 3, pos. 4).

Remove two large ignition wires by pulling them outwards.

(Fig. 3, pos. 5).

Remove yellow/green striped ground wire spade connection by

depressing tab on connector and pulling it gently off the board.

(Fig. 3, pos. 6).

Loosen two small flat head screws on terminal block for power

cord. Pull black and white wires free from terminal block and

control unit. (Fig. 3, pos. 7).

Loosen Phillips head screw and remove green ground wire con-

nection for power cord. (Fig. 3, pos. 8).

Figure 3

1 1

Remove control unit from the water heater.

Appliance evaluation for PCB jumper location

Please evaluate the following prior to installation of the replacement

PCB:

|G3-24 | 715ES, C800ES, 2400ES, 2700ES, Evolution 500, Integra 500 Service bulletin

Data subject to change without notice | Printed in the USA | BTC 710002318 D | 06.2012 Bosch Thermotechnology Corp.

Bosch Thermotechnology Corp.

50 Wentworth Avenue

Londonderry, NH 03053

Tel: 1-800-642-3111

Fax: 1-603-965-7581

www.bosch-climate.us

Locate rating plate sticker on right side of heater cover.

Determine model number (Fig.1, pos.A) and gas type (Fig.1,

pos.B).

Figure 1

PCB jumper installation

In order for the appliance to work correctly, the proper jumpers

must be installed on the PCB board. (Fig.4)

Backside of control unit

ackside o

control uni

Figure 4

Based on your model and gas type, jumpers should be installed

on the PCB in the following arrangement:

Model 2400 ES:

Natural

Gas

atura

Gas

Figure 5

Liquid

Propane

Models: C 1050 ES, 940 ES/ESO, 2700 ES, C 800 ES, 715 ES,

Evolution 500 (WTD 27), or Integra 500 (WTD 30)

Figure 7

Natural

Gas

Liquid

Propane

Replacing control unit

Once the appropriate jumpers have been determined, remove

rear cover of replacement control unit.

Install jumpers in the proper location on PCB.

Connect green ground wire from power cord to replacement

control board with Phillips head screw. (Fig. 3, pos. 8).

Reconnect black and white power cord wires to terminal

block on replacement control unit; Black -L (Load), White - N

(Neutral). Secure to terminal block by tightening flat head

screws. (Fig. 3, pos. 7).5. Reconnect yellow/green striped

ground wire to spade connection on replacement control

board. (Fig. 3, pos. 6).

Reattach large ignition wires to replacement control board (no

polarity). (Fig. 3, pos. 5).

Reconnect small electrical strip connector to replacement con-

trol board. (Fig. 3, pos. 4).

Reconnect medium sized electrical strip connector to replace-

ment control board. (Fig. 3, pos. 3).

Reconnect two large electrical strip connectors to replacement

control board. (Fig. 3, pos. 2).

Reseat rubber wire restraints in control unit. (Fig. 3, pos. 1).

Replace rear cover on unit using 6 Phillips screw (Fig. 2, pos.3).

Place control unit back into water heater and secure with 3

Phillips head screws. (Fig. 2, pos. 1).

Plug water heater power cord back into electrical outlet and

push On/Off button on water heater to “ON”.

This manual suits for next models

Other Bosch Water Heater manuals

Bosch

Bosch C 950 Owner's manual

Bosch

Bosch Pro Tankless GWH-635-ES-N User manual

Bosch

Bosch RDH 1810 User manual

Bosch

Bosch TR1000 12 B User manual

Bosch

Bosch Therm 4000 S User manual

Bosch

Bosch C 1210 ES/ESC User manual

Bosch

Bosch AquaStar 125HX LP User manual

Bosch

Bosch Tronic 3000T ES 2.5 User manual

Bosch

Bosch TR7000 Series User manual

Bosch

Bosch AQUASTAR 125B LPL operati User manual

Bosch

Bosch TR7000R 24/27 DESOB User manual

Bosch

Bosch BH 120-5 Instruction Manual

Bosch

Bosch C 1210 ESC Reference manual

Bosch

Bosch TR4000 User manual

Bosch

Bosch WR430-7K Assembly instructions

Bosch

Bosch TR5000 Series User manual

Bosch

Bosch T4200 14-2D Guide

Bosch

Bosch 520-HN-N User manual

Bosch

Bosch WR 11 B Technical Document

Bosch

Bosch Greentherm T9800 SEC 160/199 Instructions for use

Bosch

Bosch GWI-N Series Operating and installation instructions

Bosch

Bosch SST150-40 User manual

Bosch

Bosch HydroPower 10H User manual

Bosch

Bosch Tronic 4000 Series User manual

Popular Water Heater manuals by other brands

Kenmore

Kenmore 153.582400 Use & care guide

Applimo

Applimo Edel AIR Installation and operating instructions

STIEBEL ELTRON

STIEBEL ELTRON Eltronom SHU 5 S Operating and installation instructions

clage

clage E-Mini Series Operating and installation instructions

Toyotomi

Toyotomi Oil Miser OM-180 installation manual

Bradford White

Bradford White EF Series Service manual

Eccotemp

Eccotemp 40-H Use & care manual

Dimplex

Dimplex ECSd125-580 Installation and user instructions

Dux

Dux 32FCR6N installation manual

Toyotomi

Toyotomi Oil Miser OM-148 (Type D) Operation and maintenance instructions

Noritz

Noritz N-132M Owner's guide and installation manual

TESY

TESY GCV7/4S 10047 Instructions for use and maintenance

A.O. Smith

A.O. Smith Gphe 50 instruction manual

Koryo

Koryo KWHZF15Y user manual

Pentair

Pentair PSC-14-4-02 Installation and operation manual

GE 40M06AAG Energy guide

Thermor

Thermor AEROMAX SPLIT 2 Instructions for use

American Hometec

American Hometec AHQ-B03X Installation and operation manual