The water heating system is not functioning correctly
- Turn off the machine off once and then turn it on again later
- Confirm the amount of mixed water (water with antifreeze liquid) in the water heating device and refill the mixed water if the level is low
- Confirm the cover of feed-water inlet and the air vent are firmly closed
- Confirm the environmental temperature is in specified temperature.
Water can get cold before circulating if environmental temperature is too low.
Available temperature: 15 to 35C (59 to 95F)
Guaranteed temperature: 20 to 25C (68 to 77F)