Adapting the heating curve.
The Control Panel adapts the water’s set-point to the actual temperature
in the room, as measured by the Control Panel’s user interface, so as
to maintain a constant temperature in the room, for comfort and energy
saving.
For this reason the actual water temperature may vary as against the
calculated set point one, by +/- 5°C.
The user can interact with this function increasing or decreasing teh set-
point, regulating the water temperature through parameter 4, as shown in
the picture.
Correction of room temperature
The user can correct the temperature measured by the Control Panel in
case of mistakes due to placement.
Through parameter 13 (see parameter’s functions table) it is possible to
correct teh temperature by +/-5°C.
Reset of default configuration
To enter:
- Push the Zone key and the Lock key concurrently for 10 seconds.
- The number 899 is displayed in the Temperature area of the screen.
- The number 10 is displayed in the Time area of the screen.
- Activate the arrow keys.
- Set the value “0”.
- The temperature “Fd” abbreviation is displayed in the Temperature area
of the screen.
- Reset is activated.
- The Control panel is reset to the default values.
Abnormal operations
Anomalies warnings.
Preliminary instructions
In the presence of operating abnormalities, the unit is secured and
blocked.
Safety block can occur randomly.
Wait for at least 10 minutes before restarting the unit.
Any repetition of the abnormal operation requires an accurate check of
the unit’s components.
Before resetting, it is necessary to remove the cause of the anomaly.
Abnormal operations are notified by the Control Panel with codes
comprising letters and numbers, which alternate with the system’s
backflow temperature.
Part of the alarms resets automatically, while others require a manual
reset by the Technical Service.
Troubles can be diagnosed by Leds on mother circuit board.
- Example: error 23
- Off for 4 seconds
- 2 blinks: first number
- Off for 2 seconds
- 3 blinks: second number
- Off for 6 seconds
- The cycle repeats until the problem is solved.
Code
Description
2
Safety input alarm
3
Enter water Temperature Thermistor (EWT)
4
Actual Refrigerant Temperature Thermistor BPHE
5
Outdoor Air Thermistor of GMC
6
Loss communication to Control panel
7
Control panel Room Thermistor
8
Unit Capacity Mismatch
9
Flow Switch error / Water Pump
10
EEPROM Corrupt
11
OAT high than Stop Heat
12
OAT low than Stop Cool
13
Loss Communication to RS485 (system configuration type=6)
14
Loss of Signal From CDU
15
Leaving water Temperature Thermistor (LWT)
17
CDU Outdoor Air Thermistor (TO)
18
G-Tr short circuit protection
20
Position Detection Circuit Error
21
Current Sensor Error
22
Outdoor Heat Exchange Sensor (TE) / (TS)
23
Discharge Temperature Sensor (TD)
24
Outdoor Fan Error
26
Other Outdoor Error
27
Compressor Lock
28
Discharge Temperature Error
29
Compressor Breakdown
1
Position 4 LED Inverter Board Diagnostics (models 012 M - 015 M)
2
Location of Diagnostic LEDs circuit board
3
Wiring terminal
4
Electric connections inlet
1
2
3
29
