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2017-11-03
Climatix HERU® 400-2400
Troubleshooting
HMI alarm
-
Temperature alarm
-
Supply air temp.
-
Extract air temp.
-
Outside air temp.
-
Exhaust air temp.
-
Frost protection
sensor temp.
E.g.
Outside temp.: No
conn.
The affected sensor is
not connected or there
has been an
interruption, i.e. sensor
broken
Use the wiring diagram to check that the
affected sensor is connected.
Measure the resistance of the sensor
(disconnect sensor).
HMI alarm
-
Low efficiency
The calculated efficiency
has fallen below the set
limit value
•
Check the function of the rotary heat
exchanger
•
Make sure the limit value is set
correctly: Main index > Unit >
Temperature regulation > Heat
recovery > Efficiency > Low limit
HMI alarm
-
Exp. modules: Alarm
Alarm on expansion
modules is not plugged
in or not connected
Configuration requires an expansion module
EXP1. On HERU® CX, EXP1 is located in a
plastic enclosure and delivered separately for
mounting on the wall near the unit. Plug it in
between 97-97, 98-98, 99-99, 100-100 (same
number in HERU® CX to same number in
EXP1)
Then acknowledge the alarm, see chap. 7.1.1
HMI alarm
-
Not config. IO: Yes
One output (belonging
to the selected function)
is not dedicated to any
output or input.
See chap. 12.1.11
HMI alarm
-
Double config.
HMI alarm
-
Supply air pressure:
under range.
(Extract air pressure:
under range.)
PROC1 believes the
pressure sensor for the
supply air (extract air)
pressure is not
connected (under range
= <0 Pa)
The supply air (extract air) pressure sensor
GP1 (GP2) is probably not connected, see
chap. 10
HMI alarm
-
Supply air flow: under
range.
(Extract air flow: under
range.)
PROC1 believes the
pressure sensor for the
supply air (extract air)
flow is not connected
(under range = <0 Pa)
The supply air (extract air) pressure sensor for
flow GF1 (GF2) is probably not connected, see
chap. 10
Summary of Contents for HERU 400-2400 S
Page 1: ...U S E R M A N U A L E N H E R U 4 0 0 2 4 0 0 T S HERU T HERU S...
Page 2: ......
Page 14: ...14 120 Climatix HERU 400 2400 2018 02 13 Scope of assembly installation instructions...
Page 45: ...45 120 2018 02 13 Climatix HERU 400 2400 External components basic unit...
Page 97: ...97 120 2018 02 13 Climatix HERU 400 2400 Miscellaneous Menu structure Menu overview...
Page 98: ...98 120 Climatix HERU 400 2400 2018 02 13 Miscellaneous Start page Main index Unit...
Page 104: ...104 120 Climatix HERU 400 2400 2018 02 13 SERVICE HERU...
Page 111: ...111 120 2018 02 13 Climatix HERU 400 2400 SERVICE HERU...
Page 118: ...118 120 2017 11 03 Climatix HERU 400 2400 Troubleshooting...
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