Exhausto EXact2 HMI2-350-TOUCH, Основные инструкции

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HC Controller
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
16 02 1
HC
HCW: Fan speed tem-
porarily reduced iHCW : Fan speed temporarily reduced because warning lim-
it for frost protection of water heating coil has been reached
16 03 1 HCW: VEX temporarily
stopped iHCW : Fan speed temporarily reduced because stop tem-
perature for frost protection of water heating coil has been
reached
16 04 1 HCW: VEX stopped iHCW : Fan speed stopped because of frost alarm on the
water heating coil
16 05 1 HCE: Run-on operating
because electric heat-
ing coil warm in last
three minutes HCE : The fans run on for three minutes after the electric
heating coil has been in operation
CO
2
sensor
Device
Fault code
Category
Alarm description
Troubleshooting
(See appendix 1: "Simplified diagrams" for the positioning of dampers,
sensors, air directions, etc.)
xx yy z
21 01 2 No modbus communi-
cation to MIO CO
2
module
● Check the modbus cable between the connection board (EX-
act)/main board (EXact2) and MIO module.
● Check the modbus cable from the MIO module to the other
units for faulty wiring.
● Check the DIP-switch settings in the MIO module, refer to MIO
module instructions.
21 02 2 CO
2
level below 100
ppm. CO
2
sensor may
be defective.
● CO
2
sensor may be defective and should be replaced.
21 03 2 CO
2
input via BMS se-
lected and BMS has
not been configured.
● Configure BMS.
3006401-2022-05-04
Alarms
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