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Troubleshooting Guide | AE12, RP12T, US12
Data subject to change without notice | Printed in the USA | BTC 721002308 A | 09.2013
Bosch Thermotechnology Corp.
Bosch Thermotechnology Corp.
50 Wentworth Avenue
Londonderry, NH 03053
Tel: 1-866-330-2729
Fax: 1-603-965-7581
www.bosch-climate.us
Water Heater:
STEP 3: Are there any burned or melted wires in the unit?
Yes No
Are there any signs of water leakage? Yes No
Is the thermal cut out tripped? Yes No
If the thermal cut out was tripped, have you reset it? Yes No
Are there any signs of water leakage? Yes No
STEP 4: Is there continuity across the fl ow switch when water is
running through the unit
Yes No
Resistance of each element
Element 1: ________ Ω
Element 2: ________ Ω
Are Either Of The Two Elements Grounded Yes No
Thermal Cut Out Continuity:
A-B Terminals: Yes No
C-D Terminals: Yes No
STEP 5: Voltage Supply:
Voltage across L1 - L2: ________VAC
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.
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