Bosch 2400ES/2700ES Service Bulletins

Bosch has released a series of Technical Service Bulletins for the Bosch 2400ES and Bosch 2700ES tankless water heaters. These Technical Service Bulletins can be extremely helpful for installers and home owners who are installing the Bosch AquaStar 2400ES or Bosch AquaStar 2700ES gas tankless water heaters.

Many of these Bosch Service Bulletins also apply to the Bosch Pro 715ES, C800ES, C920ES, C920ESC tankless water heaters. See the Models listed in the header of each Service Bulletin to determine if the bulletin applies to your specific Bosch water heater.

Bosch 2400ES and Bosch 2700ES Technical Service Bulletins:

• G3-03 Measuring Gas Pressure
• G3-05 Checking and replacing temperature sensors
• G3-06 Winterizing and Freeze Prevention
• G3-07 Control Unit Diagnostics
• G3-12 Measuring and adjusting CO2
• G3-13 Descaling the heat exchanger
• G3-14 Installing Wall Thimble On Uneven Surface
• G3-15 Fan speed adjustments
• G3-22 Replacing heat exchanger
• G3-23 Cleaning and replacing ignition group
• G3-24 Replacing the control unit
• G3-26 Removing and Replacing Water valve
• G3-28 Replacing gas valve

Steve