Saturday, September 29, 2018

Troubleshooting Bosch Tankless Water Heaters and Mini-tank Water Heaters

Bosch maintains a page on their web site for basic troubleshooting techniques on the following Bosch water heating products:


  • Bosch Therm C 1210 ES
  • Bosch Therm C 1210 ESC
  • Bosch Pro GWH C 800 ES
  • Bosch Pro GWH C 715 ES
  • Bosch Therm 830 ES
  • Bosch Therm 660 EF
  • Bosch Therm 660 EFO
  • Bosch Therm 520 HN
  • Bosch Therm 520 PN
  • Bosch Therm 330 PN
  • Bosch PowerStream Pro RP27PT
  • Bosch PowerStream Pro RP17PT
  • Bosch PowerStream Pro RP Series
  • Bosch Ariston electric mini-tank models
The Bosch hotline for all gas tankless water heater products is 800-642-3111.

The Bosch hotline for all electric tankless and mini-tank water heater products is 866-330-2729.

For the lowest pricing on genuine Bosch replacement parts, please contact Bosch Technical Support at the above numbers for troubleshooting and warranty support. Be sure to get them to provide you with the full part number of any parts you need to purchase.

Call us with your needed part numbers at 866-289-4652 for the lowest price on all genuine Bosch replacement parts. We stock many of the most common parts in our Cleveland Ohio warehouse and offer same day shipping on all stocked parts.