Exhausto EXact2 VEX240 series, Basic Instructions

Page: 77 / 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 14 4 Could not increase re-
turn water temp. within
five minutes after frost
protection with VEX
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 16 3 Heating required but
flow through electrical
heating coil too low. HCE :
There must be the following min. airflows across the electric heat-
ing coil:
- HCE240: 135l/s
- HCE250: 240l/s
- HCE260: 480l/s
- HCE270: 750l/s
- HCE280: 1,260 l/s
3005167-2022-02-02
Alarms
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