Dibo SBH-G-D Mode D'emploi page 144

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C O M B U S T I O N C H A M B E R G A S H E AT E D I N S T R U C T I O N S - R E G U L AT I O N S
33. Solutions of problems
in connection with the operation of gas heated combustion chambers and heating modules.
Preface
For many years now TEHA gas combustion chambers have been proven appliances to provide instant hot water, especially
for use in cleaning applications. They have distinguished themselves by their trouble free working, long life and their
robustness. Nevertheless, failures may occur, like with all technical appliances – last but not least due to bad or no
maintenance at all.
Therefore we would like to provide you with this guideline, which enables you to help yourself in many cases.
This is a collection of data detailing various problems and some possible ways to solve them.
We have aimed to make this trouble shooting guide easy to understand and simple to follow.
Best regards, Theodor Henrichs GmbH
Table of contents
1. Basic information regarding the misbehaviour of combustion chambers.
2. General requirements for starting.
3. Problems caused by non-fulfilled starting requirements
3.1 Control with Siemens- firing automat
4. Burner troubles during the starting period.
4.1 Combustion chamber with Siemens- firing automat
4.1.1 Starting requirements of the Siemens- firing automat.
4.1.2 Fault message of the Siemens- firing automat. .
5. Malfunction during operation
5.1 The burner operates, but the water does not heat up properly.
The heating coil has become furred.
5.2 The heating coil has become entirely sooty.
5.3 The inner tube is detached from the inner lid.
5.4 The inner casing and/or the inner lid have burned out.
6. Water becomes too hot in spite of correctly regulated temperature.
7. Water escapes from the lower seams of the outer casing.
7.1 The heating coil has a crack.
7.2 Excessive building up of perspiration water.
8. Extreme corrosion after a short period of operation.
9. The temperature limiting safety device always cuts off.
10. The ventilator continues to run although the burner stopped.
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