Service Bulletins

Thermostats & Controls
Bosch Connected Control BCC100 Thermostat

Bulletin Name
Software Update History

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Gas Tankless Models
GWHC800ES / GWHC920ES / GWHC920ESC / Integra 500
2400ES / 2700ES / 715ES / C800ES / C920ES / C920ESC / Integra 500 & Evolution 500
715ES / C800ES / 2400ES / 2700ES / Evolution 500 & Integra 500
715ES / C800ES / C920ESC / 2400ES / 2700ES / Evolution & Integra 500
2400ES / 2700ES / 715ES / Evolution 500
GWH715ES / GWH2400ES / GWH2700ES / Evolution 500

Bulletin Name
Reducing Backdraft on Condensing Appliances
A4-E4 Error Code Troubleshooting
Replacing the Control Unit
EA Error Code Troubleshooting
A3-E3 Error Code Troubleshooting
Reducing Backdraft on Non Condensing Appliances

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Gas Therm Models
C1210ES, C1210ESC
C1210ESC, C1210ES, C1050ES, C950ES, 940ES, 940ESO, 830ES, 2400ES, 2700ES, 715ES, C800ES, C920ES/ESC, Integra 500, Evolution 500
C1210ESC, C1210ES, C1050ES, C950ES, 940ES, 940ESO, 830ES, 2400ES, 2700ES, 715ES, C800ES, C920ES/ESC, Integra 500, Evolution 500
C1210ESC, C1210ES, C1050ES, C950ES, 940ES, 940ESO, 830ES, 2400ES, 2700ES, 715ES, C800ES, C920ES/ESC, Integra 500, Evolution 500
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC, C1210ES, C1050ES, C950ES, 940ES, 940ESO, 830ES, 2400ES, 2700ES, 715ES, C800ES, C920ES/ESC, Integra 500, Evolution 500
C1210ESC/ES, C1050ES, C950ES, 940ES/ESO, T9800/T9900 SE(C)
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES, 940ES/ESO, 830ES
C1210ESC/ES, C1050ES
C1210ESC/ES
C1050ES, C950ES, 940ES, 940ESO, 830ES
C950ES, C1050ES
520HN
520HN, 520PN, 330PN
520HN, 520PN, 330PN
520HN, 520PN, 330PN
520HN, 520PN, 330PN
520HN, 520PN, 330PN
520HN, 520PN, 330PN
520HN, 520PN, 330PN
520HN, 520PN, 330PN
520HN, 520PN, 330PN
520HN
520HN, 520PN, 330PN
520HN, 520PN, 330PN
520HN, 520PN, 330PN
520HN, 520PN, 330PN
520HN

Bulletin Name
Replacing The Control Unit
A2 Error Code Troubleshooting (pdf)
C6-C7 Error Code Troubleshooting
Replacing Primary Fan and Main Burner
A3-E3 Error code troubleshooting
A4-E4 Error code troubleshooting
3rd Party Domestic Hot Water Recirculation Systems
E2 Error Code Troubleshooting
Water Valve Reset
Checking & replacing temperature sensors
Replacing the gas valve
Cleaning & replacing ignition group
E1 Error code troubleshooting
EA Error code troubleshooting
Control board diagnostics
Installing AQ3ES wall thimble to uneven masonry surfaces
Checking & replacing temperature sensors
Descaling the heat exchanger
Measuring gas pressure
E9 Error code troubleshooting
EC Error code troubleshooting
Winterizing and freeze prevention
Measuring and adjusting CO2
Replacing the Copper Heat Exchanger
Removing & replacing the water valve
Direct Hot Water Recirculation
Display blank, fuse troubleshooting
Reducing backdraft on condensing appliances
Replacing & servicing the condensing heat exchanger
Replacing the control unit
Replacing & servicing the condensing heat exchanger
Cleaning & replacing hydro generator
Cleaning & replacing the pilot assembly
Checking gas pressure
Negative air & freeze prevention
No spark with hot water flow
Pilot flame, no burner flame troubleshooting
Winterizing and freeze prevention
Lowering temperature
Removing and cleaning the burners
Cleaning the inlet filter
Replacing the control box
Replacing the electromagnet
Descaling the heat exchanger
Replacing ECO/Temperature Limiter
Checking the draft
Replacing the electro valves

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Greenstar Gas-Fired Condensing Boiler Models
Bosch Greenstar Combi, Bosch Greenstar
Bosch Greenstar Combi, Bosch Greenstar
Bosch Greenstar Combi
Bosch Greenstar
Bosch Greenstar Combi, Bosch Greenstar
Bosch Greenstar Combi, Bosch Greenstar
Bosch Greenstar Combi, Bosch Greenstar
Bosch Greenstar
Bosch Greenstar Combi
Bosch Greenstar
Bosch Greenstar Combi, Bosch Greenstar
Bosch Greenstar Combi, Bosch Greenstar
Bosch Greenstar Wall & Floor Boilers
Bosch Greenstar
Bosch Greenstar Boilers

Bulletin Name
Boiler Pump Inspection
Cascade Piping & Control Options
DHW Filter Information
FW 200 Control Quick Start Guide
High Limit Validation Procedure
Internal Components Resistance Readings
Gas Conversion
Proper Serial Number Registration
Required Fresh Water Supply Pressures
Turn Down Ratios
Vent and Combustion Air Pipe Position
Boiler Water Chemistry Guidelines
Side Wall Vent Termination Spacing for Multiple Boilers
Backflow Prevention Device
Heat Exchanger – Inspection Cover Torque Requirements

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Download (PDF 1.6 MB)
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Download (PDF 1.2 MB)
Download (PDF 0.1 MB)
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Download (PDF 0.3 MB)
Download (PDF 0.2 MB)
Download (PDF 0.3 MB)

SSB Gas-Fired Condensing Boiler Models
SSB255, SSB399, SSB512
SSB255, SSB399, SSB512

Bulletin Name
Condensate Collector - Identifying Potential Cracks
Control Board Replacement – Correct Setting of Parameter

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Electric Tankless Models
AE115, AE125, RP17PT, and RP27PT (prior to FD108)
RP17PT and RP27PT
RP17PT and RP27PT
RP17PT and RP27PT (Polymer Modules Only)
RP17PT and RP27PT
RP17PT and RP27PT
RP17PT and RP27PT
RP Series
RP Series
RP Series
RP Series
RP Series
RP Series
Tronic US 3, 6, 7, 9 & 12
TRONIC 5000C Pro Models: WH17, WH27, WH36
TRONIC WH17, WH27, WH36, AE115, AE125
TRONIC WH17, WH27, WH36, AE115, AE125 (FD108 & Higher)
TRONIC 5000C Pro Models: WH17, WH27, WH36 (serial numbers ≥FD108)

Bulletin Name
EP-25 Comprehensive Troubleshooting Guide
EP-01 Light Off - Water Not Hot
EP-02 Neon Light On - Water Not Hot
EP-03 Freeze Prevention
EP-22 Replacing Control Board
EP-23 Removing & Replacing Element Assembly
EP-24 Removing & Replacing Flow Transducer
E1-01 Freeze Prevention
E1-11 Warm Inlet Water Modification
E1-02 Overcoming Fluctuating Temperatures
E1-21 Replacing Flow Switch
E1-22 Repacing Circuit Board
12kW Troubleshooting Guide
Low kW Troubleshooting Guide
Triac Printed Circuit Board Replacement
Flow Sensor Replacement
High kW Troubleshooting Guide
Heating Element Replacement

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Download (PDF 0.3 MB)
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Download (PDF 0.7 MB)
Download (PDF 0.6 MB)
Download (PDF 1.1 MB)
Download (PDF 1.1 MB)
Download (PDF 0.8 MB)
Download (PDF 0.8 MB)

Electric Mini-Tank Models
GL2.5Ti, GL4.0Ti, GL8Ti
GL2.5Ti, GL4.0Ti, GL8Ti
GL2.5Ti, GL4.0Ti, GL8Ti
All Models

Bulletin Name
P1-01 Resetting Thermostat & Setting Temp
P1-21 Replacing Element Gasket or Anode
P1-22 Replacing Thermostat
Anode Rod Inspection

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Water Source Heat Pumps
Models: SM, SM Split CS, CE, BP, SV, SV Split CS, SL, TW, BC, LV, LV Split CS, EP, CA, ES, LM, LM Split CS, EC, MC, WT, WW, TRS, RT
Models: SM, SM Split CS, CE, BP, SV, SV Split CS, TW, LV, LV Split CS, EP, CA, ES, LM, LM Split CS, EC, MC, WT, WW, RT
All Water Source Heat Pumps
All Water Source Heat Pumps
All Water Source Heat Pumps
LV and SV Heat Pump Products
CA009 (Rev.C) Heat Pumps

Bulletin Name
Heat Pump Water Quality Requirements
Heat Pump Hose Kits - Water Flow Rates
Acid Cleaning of Water Coils
Recommended Service Clearance
Heat Pump - Flow Proving Switch / Differential Pressure Switch (DPS)
Compressor Retrofit Kit, Cross-Reference Chart
Potential Missing Charge Compensator

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Air-to-Air Heat Pumps
Bosch BOVA Split System Heat Pump
Bosch IDS2.0 and IDP Heat Pump
Bosch IDS BVA2.0 Heat Pump

Bulletin Name
Control Board Replacement Procedure
Indoor Fan - Anti Cold Air Function Error Resolution
Motor And Motor Module Replacement

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Furnace
BGH96 Gas Furnace

Bulletin Name
Condensate Trap Error

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Indirect Tanks
LT Series, S32, SM Series, ST Series, SU Series

Bulletin Name
Anode Rod Inspection

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