Exhausto EXact2 HMI2-350-TOUCH, Основные инструкции

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HC Alarm
Unit
Fault code
Category
Unit Alarm description
Troubleshooting
(See appendix 1: "Simplified diagrams" for the positioning of
dampers, sensors, air directions, etc.)
xx yy z
14 01 1
MHCE2
Thermal fuse TSA70
activated HCE:
Info is reset when the temperature falls below 70°C.
14 02 2 Thermal fuse TSA70
is/has been activated HCE:
● Check airflow across the electric heating coil, select
same fan speed as when the alarm was triggered
● Check that the air channels are not blocked (ducts/
grilles/cowls).
● Check that the filters are clean.
14 03 1 Thermal fuse
TSA90/120 activated. HCE:
Info is reset when the temperature falls below 90°C or
120°C.
14 04 4 Thermal fuse
TSA90/120 is/has been
activated HCE:
● Check airflow across the electric heating coil, select
same fan speed as when the alarm was triggered
● Check that the air channels are not blocked (ducts/
grilles/cowls).
● Check that the filters are clean.
14 07 1 Electrical heating coil
internal thermal fuse
activated HCE:
Info is reset when the temperature falls below 60°C in
the control system box
14 08 4 Electrical heating coil
control's internal ther-
mal fuse is/has been
activated HCE:
● Temperature in the electrical heating coil's control
system box is/has been greater than 60°C. Check
for possible causes for this high temperature and
rectify the fault
14 09 3 HCW Return water temp. be-
coming too low. VEX
running in reduced
mode and frost protec-
tion HCW:
● Check that the hot water supply to the heating coil is
functioning
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 constant temperature level
3006401-2022-05-04
Alarms
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