Bosch GWH C 800 ES Installation Instructions Manual page 44
Temperature modulated with electronic ignition suitable for heating potable water - not approved for space heating purposes intended for variable flow applications
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Also See for GWH C 800 ES:
- Applications manual (50 pages) ,
- User manual (20 pages) ,
- Installation manual (8 pages)
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Problem solving
Display
Cause
Gas leakage error, gas valve circuit
not closing properly.
Table 18
* By installer or service technician only.
44
Solution
1. Disconnect power supply cord and check wire connections on
gas valve and the two connectors on the control board.
2. Flow water out of a hot water tap above the minimum activation
point of 0.65 GPM. Measure voltage at the gas valve wire plug
connection. The voltage should measure 24VDC between the left
pair of wires and 24VDC between the right pair of wires when the
unit is operating. If voltage is not proper, contact Bosch Water
Heating for further instruction.
3. Gas valve may be defective, contact Bosch Water Heating for
further instrucation.
6 720 608 643
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