Bosch C 1210 ESC Referenzhandbuch

Technical Service Bulletin:

A3 / E3 Error Code Troubleshooting

Models: C1210ESC, C1210ES, C1050ES, C950ES, 940ES, 940ESO, 830ES

Introduction

The following procedures are for gathering information to assist

Bosch Tech Support in determining the cause and solution to the

problem. Unplug power cord and remove outer and inner covers

from heater (refer to Installation Manual).

Note: The following bulletin applies only to serial numbers up to

FD986

Error code explanation:

A3 error code: Open jumper circuit

E3 error code: Incorrect resistance in jumper circuit

Tools needed:

Phillips head screwdriver

Ohmmeter

Troubleshooting procedure

1. Check position of jumper at top right of heat exchanger plugged

into connector on green wires (Fig. 1, pos.1).

Figure 1

If jumper is near heat exchanger or ﬂue gas collector, move

jumper to the right and tuck wires into clip on right side to

prevent jumper from overheating (Fig. 2, pos. 1).

Figure 2

2. Check that jumper is connected tightly to connector. Disconnect

and reconnect to improve connection.

3. Check for correct appliance type setting (model 830ES skip this

step):

a. Plug in heater's power cord and place heater into diagnostic

mode (refer to manual section 6.7).

b. Push “+” button until “P7” is displayed.

c. Push “P” button. Display should read “NO” or “NC”.

d. If display reads “Cd”, push “+” button until “NO” is dis-

played. Push “P” button for 5 seconds to save correct

appliance type.

e. Push power button to "off" position and back to "on"

position.

Before proceeding to the next step, plug in power cord and reset

the heater to see if error code has cleared. If error code will not

clear or occurs again during operation, move to step 4.

4 |A3 / E3 Error Code Troubleshooting Technical Service Bulletin

Data subject to change without notice | Printed in the USA | BTC 740002307 B | 06.2011 Bosch Thermotechnology Corp.

Bosch Thermotechnology Corp.

50 Wentworth Avenue

Londonderry, NH 03053

Tel: 1-800-283-3787

Fax: 1-603-584-1687

www.bosch-climate.us

4. Remove control unit from heater and reseat wire connector on

circuit board:

a. Unplug heater‘s power cord.

b. Remove 3 screws attaching control unit to heater.

c. Turn control unit over.

d. Remove 6 screws attaching rear cover to control unit.

e. Remove rear cover.

f. Locate shorter of 2 multiple wire connectors on edge of

circuit board (Fig. 3, pos.1).

g. Remove and reinstall connector onto edge of board to

improve the electrical connection.

Figure 3

5. Ensure power cord is still unplugged or push power button to

"off" position. Disconnect jumper from connector and measure

resistance through jumper.

a. If less than 115 or greater than 125 ohms, jumper is faulty.

b. If between 115 and 125 ohms, contact Bosch Tech Support

for further instructions.

Andere Handbücher für C 1210 ESC

Dieses Handbuch passt für folgende Modelle

Andere Bosch Boiler Handbücher

Bosch

Bosch TR1500TOR 5 T Bedienungsanleitung

Bosch

Bosch Integra 500 Series Referenzhandbuch

Bosch

Bosch TR2500T Bedienungsanleitung

Bosch

Bosch Tronic 3000T ES2.5 Technisches Dokument

Bosch

Bosch Highflow 17e Bedienungsanleitung

Bosch

Bosch C 950 Betriebsanleitung

Bosch

Bosch GWH 715 ES Gebrauchsanweisung

Bosch

Bosch 425HN Referenzhandbuch

Bosch

Bosch TR4000 Bedienungsanleitung

Bosch

Bosch ED5-2S Bedienungsanleitung

Bosch

Bosch GWH 1000 Bedienungsanleitung

Bosch

Bosch 520-HN-N Bedienungsanleitung

Bosch

Bosch BSS250E-2 Bedienungsanleitung

Bosch

Bosch TF250 Technisches Dokument

Bosch

Bosch Aquastar GWH 1600 H N Bedienungsanleitung

Bosch

Bosch Stora WS 300-5 PK Betriebsanleitung

Bosch

Bosch Therm 4000 S Bedienungsanleitung

Bosch

Bosch WH36 Technisches Dokument

Bosch

Bosch 715ES Referenzhandbuch

Bosch

Bosch C950ES Bedienungsanleitung

Bosch

Bosch Optiflow Professional GWH12 Bedienungsanleitung

Bosch

Bosch Tronic 4000 Series Bedienungsanleitung

Bosch

Bosch Model GWH 425 Bedienungsanleitung

Bosch

Bosch AquaStar 125FX LP Bedienungsanleitung

Beliebte Boiler Handbücher anderer Marken

Kenmore

Kenmore 153.582400 Bedienungsanleitung

Applimo

Applimo Edel AIR Bedienungsanleitung

STIEBEL ELTRON

STIEBEL ELTRON Eltronom SHU 5 S Bedienungsanleitung

clage

clage E-Mini Series Bedienungsanleitung

Toyotomi

Toyotomi Oil Miser OM-180 Bedienungsanleitung

Bradford White

Bradford White EF Series Bedienungsanleitung

Eccotemp

Eccotemp 40-H Bedienungsanleitung

Dimplex

Dimplex ECSd125-580 Leitfaden

Dux

Dux 32FCR6N Bedienungsanleitung

Toyotomi

Toyotomi Oil Miser OM-148 (Type D) Fehlerbehebungshandbuch

Noritz

Noritz N-132M Gebrauchsanweisung

TESY

TESY GCV7/4S 10047 Technisches Datenblatt

A.O. Smith

A.O. Smith Gphe 50 Bedienungsanleitung

Koryo

Koryo KWHZF15Y Bedienungsanleitung

Pentair

Pentair PSC-14-4-02 Bedienungsanleitung

GE 40M06AAG Montageanleitung

Thermor

Thermor AEROMAX SPLIT 2 Bedienungsanleitung

American Hometec

American Hometec AHQ-B03X Bedienungsanleitung