Exhausto EXact2 VEX240 series, Basic Instructions

Page: 76 / 108

HC Alarm
Unit
Fault code
Category
Alarm description
Troubleshooting
(See appendix 1: "Simplified diagrams" for the location of dampers, sen-
sors, air directions, etc.)
xx yy z
14 10 3 Return water temp. too
low. Frost protection
activated. VEX tempo-
rarily stopped HCW:
● Check that the hot water supply to the heating coil is function-
ing.
If the hot water supply is functioning, check if the motor valve
opens and the circulation pump is running.
● Check by turning the unit to "OFF" in the user menu and force
start the motor valve and circulation pump in specialist menu
8.3.
The alarm resets automatically when the temperature rises above
the heat retention level.
14 11 3 Return water temp.
measured by external
sensor becoming too
low. VEX running in re-
duced mode HCW:
● Check that the hot water supply to the heating coil is function-
ing.
If the hot water supply is functioning, check if the motor valve
opens and the circulation pump is running.
● Check by turning the unit to "OFF" in the user menu and force
start the motor valve and circulation pump in specialist menu
8.3.
The alarm resets automatically when the temperature rises above
the heat retention level.
14 12 3 Return water temp.
measured by external
sensor becoming too
low. VEX temporarily
stopped. HCW:
● Check that the hot water supply to the heating coil is function-
ing.
If the hot water supply is functioning, check if the motor valve
opens and the circulation pump is running.
● Check by turning the unit to "OFF" in the user menu and force
start the motor valve and circulation pump in specialist menu
8.3.
The alarm resets automatically when the temperature rises above
the heat retention level.
14 13 4 Max. total no. of re-
starts within one hour
reached. HCW:
● Check that the hot water supply to the heating coil is function-
ing.
If the hot water supply is functioning, check if the motor valve
opens and the circulation pump is running.
● Check by turning the unit to "OFF" in the user menu and force
start the motor valve and circulation pump in specialist menu
8.3.
The alarm resets automatically when the temperature rises above
the heat retention level.
3005167-2022-02-02
Alarms
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