
HD 4000 C / HD 6000 C
F. Trouble Shooting
English
| System runs for about 15 | Admission pressure of | check pump rotation | Customer | 
| sec after pressing the | hot water too low | direction, check water | Service | 
| unlock button and then | 
 | intake | 
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| switches off. General fault | 
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| and “Admission pressure | Pressure switch | replace | Customer | 
| of  | precompression | 
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| LED light up | 
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 | cable in ABS hot | 
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 | water defective | 
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| Pump starts during | Pressure switch or | replace | Customer | 
| available time but not by | cable to pressure | 
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| opening the handgun | switch defective | 
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| Unlock button activated, | Pressure switch | replace | Customer | 
| “operational” indicator light | defective | 
 | Service | 
| illuminates, system does | 
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| not start up | 
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| While activating the HD | Flow switch does not | check flow switch | Customer | 
| pistols the unit switches | function | 
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| itself off | 
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| Unlock button activated, | “operational” indicator | switch  | Customer | 
| system starts up, | light defective | master switch Q1 to | Service/ | 
| “operational” indicator light | 
 | position 0, open control | Electrician | 
| does not illuminate | 
 | cabinet and verify or | 
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 | replace components | 
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| System does not switch on | Flow switch S2 | replace upper part of flow | Customer | 
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 | defective | switch | Service/ | 
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| Remote start button does | System in a | eliminate the cause and | Operator | 
| not function | malfunction state | press unlock button | 
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| F4 |