FAULT FINDING
Problem | Cause | Remedy |
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Desired room | Thermostatic radiator | Increase thermostatic |
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temperature is not | valve(s) set too low | radiator valve setting(s) |
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reached |
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| Temperature control for | Increase CH flow |
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| CH flow on boiler set too | temperature control |
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| low | setting |
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| Air trapped in heating | Bleed radiators and |
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| system | recharge heating system |
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| MAINTENANCE | |
Desired room | Radiators are too hot | Turn down thermostatic | ||
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temperature exceeded by |
| radiator valves / room stat |
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large amount |
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Temperature rises | Clock is incorrectly set | Check setting |
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instead of falling |
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No display or display unit | Momentary power failure | Switch off appliance at |
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does not respond |
| master switch, wait a few |
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| seconds then switch on |
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| again |
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Hot water temperature | Hot water temperature | Check setting |
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too low | dial set too low |
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WORCESTER BOSCH GREENSTAR HIGHFLOW 440 6 720 611 731a (08.04)
FAULT FINDING
15
