03
04
05
06
07
08
09
10
99
01
02
Gas leakage
99
Other faults
99
Technical Manual for DGI
Water leakage
between
connector and water flow sensor
Water leakage between water flow sensor
and heat exchanger
Water leakage from weld seam on heat
exchanger
Water leakage between heat exchanger
and water outlet connector
Water leakage
between
connector and other component
Water
leakage
between
connector and other component
Water leakage caused by breakout of heat
exchanger
Water leakage of water volume servo
Other causes
Check for leakage of external fuel gas pipe
Check for leakage of internal fuel gas pipe
Other causes
Other causes
water supply
water supply
water
outlet
- 57 -
Adjust/replace seal ring
Adjust/replace seal ring
Replace heat exchanger
Adjust/replace seal ring
Adjust/replace seal ring
Adjust/replace seal ring
Replace heat exchanger
Replace/adjust
Other causes
Carry out re-installation or
adjustment
Carry out re-installation or
adjustment
Other causes
Other causes