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Wiring diagram bosch BAT 415 - Water Heaters

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Bosch aquastar a125b piezo wiring diagram


Piezo igniter only needs 1 wire to cause spark.
The other wire might connect to electronic gas control to report error, but brand type and age of product is not described in question.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

Gene h

Mar 18, 2014 | Water Heaters

1 Answer

Bosch AE125 no hot water, blinking light


Hey Andy. Do you have your owners manual? There should be a section near the back that will break down the diagnostic code the flashing light is giving you. If not remove the front cover and look inside should be a wiring diagram and light legend.

Dec 14, 2013 | Bosch PowerStar AE125 AE125 Whole House...

1 Answer

Failed Bosch AE125


Contact Bosch 800-283-3787, or service technician.
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

Product has 10 year limited warranty against defects in workmanship, failed parts, failed heat exchanger for original homeowner with receipt. But does not cover neglect, failure to follow maintenance, installation etc. Pg 23 example manual
You generally have to pay for service call to verify installation, then send tankless into factory, or have service technician repair unit, at your expense minus cost of parts
http://waterheatertimer.org/pdf/Bosch-AE115-AE125_manual.pdf

To double check wiring:
http://waterheatertimer.org/How-to-wire-Tankless-electric-water-heater.html

Sep 29, 2012 | Bosch PowerStar AE125 AE125 Whole House...

1 Answer

Bosch AE-9.5 keeps tripping the reset


All resets and breakers trip with high heat.
Do you mean the tankless unit is tripping the 40 amp circuit breaker?
Or the thermal cut-out, located on unit, is tripping?

Is this a new installation?
Or was the tankless working before and stop working?

Copy following link to check wiring.
AE 9.5 requires 40 amp breaker and 6 gauge wire.
http://waterheatertimer.org/How-to-wire-Tankless-electric-water-heater.html

If the unit is tripping the thermal cut, -out, then product manual says to call Bosch or service technician.
Call Bosch 866-330-2729
http://waterheatertimer.org/pdf/Bosch-Powerstar-AE3.4-7.2-9.5.pdf
Thermal cut-out can trip if water flow is too low.
Try changing power selector screw from Hi to Lo so only 1 element is ON. See diagram page 6 of manual.
Adjust the 'outlet service valve:' The manual recommends that a ball valve be installed between hot outlet and faucet. Adjust the valve so more water flows to faucet.
Remove aerator, clean aerator, don't use low flow restrictions or low flow shower heads, replace leaky faucet cartridge on single-handle faucet.

Aug 29, 2012 | Bosch AE-9.5 PowerStar 1.5 GPM...

2 Answers

A2 code appears and there is no hot water in the house. what should i do?


Problem with overheat cutoff. Press reset button on the control panel.
Before calling service technician, open following link for Bosch troubleshoot resources.
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html
Recommend that people not install tankless water heaters, or heaters they cannot repair themselves since all costs are energy.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Aug 04, 2012 | Bosch Water Heaters

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