Bosch AE12 Troubleshooting Manual page 6

6 |
Troubleshooting Guide | AE12, RP12T, US12
Water Heater:
STEP 3: Are there any burned or melted wires in the unit?
Are there any signs of water leakage?
Is the thermal cut out tripped?
If the thermal cut out was tripped, have you reset it?
Are there any signs of water leakage?
STEP 4: Is there continuity across the fl ow switch when water is
running through the unit
Resistance of each element
Are Either Of The Two Elements Grounded
Thermal Cut Out Continuity:
STEP 5: Voltage Supply:
After completing this questionnaire, please have your
technician call us while still at the unit at 1-866-330-2729
for diagnosis and resolution or if it is more convenient,
please email the completed questionnaire to
ldy.asa@us.bosch.com and we will reply within one
business day.
Data subject to change without notice | Printed in the USA | BTC 721002308 A | 09.2013
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Element 1: ________ Ω
Element 2: ________ Ω
Yes No
A-B Terminals:
Yes
C-D Terminals:
Yes
Voltage across L1 - L2: ________VAC
No
No
Bosch Thermotechnology Corp.
50 Wentworth Avenue
Londonderry, NH 03053
Tel: 1-866-330-2729
Fax: 1-603-965-7581
www.bosch-climate.us
Bosch Thermotechnology Corp.