Cause: - Excessive temperature of the return sensor.
Measure: - Check that all push pumps are running.
- Check that the return sensor works correctly
. Shall be connected to X5: 3-4.
13.14
SD memory card error
Cause: - Comes from faulty or missing SD memory card.
Measure: - Make sure the SD memory card is in place,
- Check that parameter for this function in the menu
Advanced settings"/"General settings" hold the button
for 5 seconds.
Proceed to "Hardware settings" / "Display settings" / "SD
memory card" / "Log to SD card"
- This parameter should be set to Yes if the memory card is in
place and No if not.
- The memory card is 4 GB as standard but can be replaced
with 8.0 GB, 16.0 GB or 32.0 GB.
- Make sure the memory card works by connecting it to a regular
computer.
13.15
Inverter connection failure
Cause: - Incorrect parameter.
Measure: - Check that parameter for this function in the Advanced
Settings / "General Settings" menu hold the button for 5
seconds.
Proceed to Hardware Settings / Display Settings / Inverter /
Read Alarm Code /
This parameter should be set to No.
13.16
Pressure ratio alarm
Cause: - Too high a pressure ratio, high pressure is too high in
relation to low pressure.
May be due to excessive flow temperature.
Measure: Check the supply temperature.
See also Measure in section 16.2 High gas pressure alarm,
16.3 Low pressure 1 alarm and 16.5 Inverter alarm (0).
13.17
Hot gas temperature alarm
Cause: - Too high hot gas temperature, above 120 ° C.
Usually depends on cold media deficiency or that the expansion
valve does not open properly.
Measure: - See section 16.20 EEV Max pos timeout.
13.18
Alarm - Multiple alarms simultaneously
Cause: - The connectors on the control board probably have been
pulled out when the front plate or the cables have come loose
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