32
32
Operating Instructions
Troubleshooting
No hot water is supplied
even though the hot
water tap is turned on
(open).
• Are the gas valve and water supply tap fully opened?
• When a remote controller is installed, is the temperature setting
correct? (
P15, 23)
• If the ambient water temperature is high, when a low temperature
setting is used, the supplied water temperature may be higher than
the set temperature.
• If using small amounts of hot water, the water may be hotter than
the set temperature.
The warm water is too
hot.
• Are the gas valve and water supply tap fully opened?
• In case there is a remote controller, check if the temperature setting
correct? (
P15, 23)
• When the water temperature is low, set temperature may not be
discharged when discharging large amounts of warm water.
For the discharge of water at the set temperature, lower the volume
of water discharge by partially closing the water supply tap.
The hot water outlet
temperature is lower than
the set temperature.
• Are the gas valve and water supply tap fully open?
• Has the water supply been shut down?
• Is the hot water supply tap fully opened?
• Has the gas meter (microcomputer meter) shut off the gas? (Can you
use any other gas-powered equipment, such as your gas cooker?)
• Is the drain plug filter clogged? (
P31)
• Is the power turned “On”?
No hot (or cold) water is
supplied even though
the hot water tap is
turned on (open).
• Has the water supply been shut down?
No hot water is supplied
at the set temperature.
• Is the hot water supply tap fully opened?
• Burner is extinguished when the flow of water from the hot water
supply tap becomes 2.0 liters of less per minute.
For stable temperature of water, increase the volume of water
discharge by further opening the water supply tap.
Water becomes cold
when the tap is nearly
shut.
< If there is an additional re-
mote controller… >
Cannot set water temperature
• Does the remote controller being used have priority? (
P15, 23)
Problems concerning temperature
