97
GB
GB
9. CODE AND ALLARMS
Menù Set indoor, Menù label AL
Code
Cause
Solution
AMbt
Faulty temperature sensor CHRONO TH
- Check the CRONO-TH connection
- Replace the CRONO-TH
AMbH
Failure of the humidity sensor CHRONO TH
- Check the CRONO-TH connection
- Check the humidity sensor connection in the CRONO-TH
- Replace the humidity sensor
OUtA
Failure external temperature sensor
- Check the connection
- Replace the probe
OUtU
Sensor fault water return temperature
- Check the connection
- Replace the probe
3-4
Faulty temperature sensor accumulation ACS
- Check the element connected to terminal blocks 3-4 and the
setting of parameter 300 “t3-4”
SAnt
Abnormality detected by the main PCB (ch. 9.8)
- Check the connection and setting of parameter 123 “COnt”
- Replace the probe
HP
Heat pump error. Error code on PCB display
See alarm errors on the PCB Main Display
rEmC
Connection error CHRONO TH
- Check the CRONO-TH connection
- Replace the CRONO-TH
CONd
Low Temp. And / or water flow (Sec. 9.6)
- Check the hydraulic system
- Check the parameter setting
SUrr
High temp. Water to the radiant system (ch. 9.6)
- Check the hydraulic system
- Check the parameter setting
9.2 Alarm Codes ON SMART-MT
Main screen
No. 1
No. 2
No. 4
No. 6
No. 3
No. 5
No. 7
UP
DOWN
Key ESC
Key SET
Water temperature too high (heating mode)
In the following case shows the "SURR" alarm, which activates the pump
and turn off the compressor:
- In just radiating operation when the water temperature system flow
exceeds the temperature limit value Par.224
9.4 Alternative heat source
When the heat pump is HP (in winter operation alarm) it can not be satis-
fied the required thermal energy, then forwards the request to the possible
generator through the FL contact (ExtHeat source), if enabled OPEr
≠
0
(Par. 137)
9.3 Manual reset protection status on the heat
pump
This function prevents the heat pump functions in abnormal condition for a
long period, in case of alarm "Cond" and / or "Surr" present three times in
1 hour, the HPs stops.
To restore normal operation, you must turn off power by intervening on
'Thermal-magnetic switch.
For this operation, please contact your local Authorized Service Center for
the necessary controls in order to find the causes.
Water temperature too low (cooling mode)
In the following cases appears the "Cond" alarm, which activates the pump
and turn off the compressor:
- Temp. Water output is less than 4.0 ° C
- Temp. Inlet water is less than 5.0 ° C
- In just radiating operation when the water temperature
System flow drops below the dew point temperature Par.229
- IN-COM input as described in paragraph 8.8
Содержание EH0618DC
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