3
1 / Introduction
Chapter Title Content Page
No.
4 Troubleshooting • In the event of faults, start by checking ----------------------------------------- 24
• Control unit locking---------------------------------------------------------------- 24
• Release of control unit when locked --------------------------------------------- 24
• Diagnosis--------------------------------------------------------------------------- 25
• Fault diagnosis - flashing code--------------------------------------------------- 26
• Fault diagnosis with the diagnostic unit ----------------------------------------- 27
• Fault diagnosis with the ISO adapter and the KD 2000 software------------- 28
• Fault diagnosis with the modular timer ------------------------------------------ 29
• Troubleshooting-------------------------------------------------------------- 30 - 33
5 Repair instructions • Assembly drawing------------------------------------------------------------ 34, 35
• Repair instructions
- Prior to working on the HYDRONIC,
the following safety instructions should be noted----------------------------- 36
- Removing the hood-------------------------------------------------------------- 37
- Removing the burner ------------------------------------------------------------ 37
- Removing the burner motor ---------------------------------------------------- 38
- Checking burner motor with the test unit for burner head ------------------- 38
- Removing the ignition electrodes----------------------------------------------- 39
- Removing the fuel atomizer nozzle --------------------------------------------- 39
- Removing the ignition spark generator ---------------------------------------- 40
- Checking the ignition spark generator with the test unit for burner head -- 40
- Removing the solenoid valve --------------------------------------------------- 41
- Checking the solenoid valve with the test unit for burner head ------------- 41
- Removing the heating cartridge for the nozzle holder heater ---------------- 42
- Removing the flame pipe-------------------------------------------------------- 43
- Removing the temperature sensor and safety thermal cutout sensor ------ 44
- Impedances for temperature sensor
and safety thermal cutout sensor ----------------------------------------- 44, 45
- Fuel supply -----------------------------------------------------------------------45
- Removing the fuel strainer ------------------------------------------------------45
- Note regarding fuel quantity ---------------------------------------------------- 45
- Measuring the CO2 content in the exhaust gas ------------------------------- 46
- Adjusting the combustion air --------------------------------------------------- 46
- Taking the water pump apart (standard model)------------------------------- 47
- “Bus 2000” water pump -------------------------------------------------------- 47
6 Wiring diagram • Wiring diagram for the basic heater models ------------------------------- 48, 49
- HYDRONIC 16 - 24 V - 25 2165 01 00 00
- HYDRONIC 24 - 24 V - 25 1817 01 00 00
- HYDRONIC 30 - 24 V - 25 1818 01 00 00
- HYDRONIC 35 - 24 V - 25 1819 01 00 00
• Wiring diagram, control elements------------------------------------------------ 50
7 Environment • Certification------------------------------------------------------------------------- 51
• Test symbol ------------------------------------------------------------------------ 51
• EU declaration of conformity ----------------------------------------------------- 51
• Disposal ----------------------------------------------------------------------------51
8 Service / Index • Regional offices in Germany------------------------------------------------------ 52
• Representative offices abroad----------------------------------------------- 52, 53
• List of Abbreviations--------------------------------------------------------------- 53
• Index A-Z---------------------------------------------------------------------- 54, 55
Troubleshooting and repair instructions