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Hydro Unit
Owner’s Manual
6
Troubleshooting
If a problem occurs, contact the installation company or dealer.
If you have any questions, contact the installation company.
Problem Check
Action
Nothing is displayed on the remote controller.
• Check whether power is supplied.
• Is the circuit breaker switch turned on?
Time indication is blinking.
• Date/time setting is not made.
• Set date and time.
An error code is displayed on the remote
controller.
• Contact the installation company.
Room is not cooled or heated.
• Is scheduled operation set?
• Check whether scheduled operation is set.
• Is night setback operation set?
• Check the setting on the remote controller.
• Is the air to water heat pump operating in Auto mode?
• In Auto mode, the target value is set automatically according to the
outdoor unit temperature.
• The Auto mode can be adjusted. Contact the installation company.
Hot water is not supplied.
• Is the main water supply cock closed?
• Check valves.
• Are you using too much hot water?
• If hot water exceeding the storage capacity is used, water at a
temperature lower than the set hot water temperature is supplied.
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Summary of Contents for HWS-1405XWHM3-E
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