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Service and Maintenance
[Service] Menu
The service menu is password protected to prevent accidental changes being
made to the operation settings, by unauthorised/unqualified persons.
Troubleshooting
The following table is to be used as a guide to possible problems. It is not exhaustive and all problems should be investigated by the installer or another competent person.
Users should not attempt to repair the system themselves.
At no time should the system be operating with the safety devices by-passed or plugged.
Fault symptom
Heating system does not get up
to set temperature.
Schedule function inhibits the
system from operating but the
outdoor unit operates.
Pump runs without reason for
short time.
Mechanical noise heard coming
from indoor unit
Noisy pipework
Water discharges from one of the
relief valves
Small amounts of water drip from
one of the relief valves.
An error code appears in the
main remote controller display.
<Power failure>
All setting will be saved for 1 week with no power, after 1 week Date/Time ONLY will be saved.
<Draining the hydrobox>
WARNING: DRAINED WATER MAY BE VERY HOT
1. Before attempting to drain the hydrobox islolate from the electrical supply to prevent booster heater burning out.
2. Isolate hydrobox from primary water circuit and drain water from hydrobox. Use a suitable heat resistant hose to assist in these operations.
3. Drain any remaining water from booster heater using fitted drain cock and hose to safely drain the unit.
4. After the hydrobox is drained, water remains in the following component parts. Drain water completely by checking the inside of the parts.
• Strainer (Remove the strainer cover.)
• Pressure relief valve (Operate the valve.)
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Serial number
■ The serial number is indicated on the SPEC NAME PLATE.
Sequential number for each unit: 00001–99999
Month of manufacture: A (1), B (2), C (3), D (4), E (5), F (6), G (7), H (8), J (9), K (10), L (11), M (12)
Year of manufacture (western calendar) : 2018
Possible cause
Prohibit, schedule or holiday mode selected
Incorrectly sized floor heatings
The room in which the temperature sensor is located is at
a different temperature to the rest of the room.
Freeze stat. function is active.
Pump jam prevention mechanism to inhibit the build up of
scale.
Heaters switching on/off
Air trapped in the system
Loose pipework
The system has overheated or overpressurised
Dirt may be preventing a tight seal in the valve
The indoor or outdoor unit is reporting an abnormal condi-
tion
8, 2019
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Solution
Check settings and change as appropriate.
Contact installer.
Reposition the temperature sensor to a more suitable room.
Normal operation no action necessary.
Normal operation no action necessary.
Normal operation no action necessary.
Try bleeding radiators (if present) If the symptoms persist contact installer.
Contact installer.
Switch off power to the heat pump and booster heater then contact in-
staller.
Twist the valve cap in the direction indicted until a click is heard. This will
release a small amount of water flushing dirt from the valve. Be very care-
ful the water released will be hot. Should the valve continue to drip contact
installer as the rubber seal may be damaged and need replacing.
Make a note of the error code number and contact installer.
en
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