Owner’s Guide
22
Troubleshooting
Initial Operation
The Water Heater does not attempt to ignite
when water is running.
• Check for reversed plumbing or crossed pipes.
• Check the inlet water filter. (See page 21)
The Water Heater attempts to ignite but fails.
• Reset the Water Heater and try again. There may
be air in the gas pipe.
• Check the gas supply pressure with a
professional.
Remote Controller
The Operation indicator does not light up.
• Has there been a power failure?
• Is the power connected properly?
Clock shows “0:00”.
• When the power is reconnected, the clock on
the display screen shows “0:00”. In this case,
clock setting need to be reset. (See page 11).
The water temperature changes after a power
failure or when the power is disconnected.
• The temperature setting and the bath fill setting
may both need to be reset after a power outage.
The plastic on the surface or buttons of the
Remote Controller has torn, peeled, or air
bubbles inside.
• The surface of the Remote Controller is affixed
with a protective sheet (to prevent surface
scratching, etc.) at time of shipment. This sheet
can be removed or left as it is. When leaving
the protective sheet on, areas frequently
touched may tear or peel. However, the Remote
Controller will not malfunction from water
entering such torn or peeled areas. To restore
the appearance of the Remote Controller
surface, simply remove the protective sheet.
Hot water is not available when a fixture is
opened.
• Are the gas and water supply valves fully open?
• Is the water supply cut off?
• Is the hot water fixture sufficiently open?
• Is the gas being cut off by the gas meter? (Can
other gas devices such as stoves be used?)
• (For ULPG) Is there enough gas in the tank? (Can
other gas devices such as stoves be used?)
• Is the inlet water filter clogged? (See page 21)
• Is the Operation button turned ON?
The hot water is not the correct temperature.
• Is the hot water fixture sufficiently open?
The bath fill water is not the setting temperature.
• If there was water in the bath already when the
bath fill begin, the temperature in the bath may
be different from the temperature setting.
Water takes time to become hot when turning
the hot water fixture.
• Have you allowed enough time for the cold
water in the pipes to drain out?
The water is too hot.
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate?
(See page 13)
• If the water supply temperature is high, it is
possible for the temperature to be higher than
the temperature set on the Remote Controller.
• If only a small amount of hot water is demanded,
it is possible for the temperature to be higher
than the temperature set on the Remote
Controller.
The water is not hot enough.
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate?
(See page 13)
The water is cold when only a single fixture is
open.
• The unit will not heat the water if the flow rate is
less than the following value:
- 32 litre models: 2.0L/min
- Other than 32 litre models: 2.5L/min
Open the fixture more or open other fixtures so
that a greater flow passes through the unit, and
the unit should begin heating again.
Temperature
No water is available when a fixture is opened.
• Is the water supply cut off?
• Is the Water Heater frozen?
SBB816U取説GQ-C2434WS DU#B.indd 22 2019/11/12 11:53:48
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