Parameters Check In The Unit - EAS Electric M-Thermal Biblock Instruction Manual

10 PARAMETERS CHECK IN THE UNIT

To check the parameters of hydraulic box, open the cover and you'll
see the PCB like following, the digital display will show the
temperature of outlet water in normal condition('0' will display if the
unit is off or error code will display if error occurs). Long press the
check button and the digital display will show the operating mode,
and then press the check button in sequence, the digital display will
show the value, the implication of the value illustrated in the table
hydraulic box SW4
C N 6
C N 1 9
C N 1 4
C N 8
F S
C N 1 2
C N 3 6
C N 4
H Y D R O - B
C N 5
C N 3 C N 2 2
Number
Temperature of outlet water when unit is on, when
0
the unit is off, '0' will display
Operation mode(0——OFF，2——COOL，
1
3——HEAT，5——Water heating)
Capacity requirement before correction
2
3 Capacity requirement after correction
Outlet water temperature of backup heater
4
Outlet water temperature of additional heating source
5
Target outlet water temperature calculated from
6
climate related curves
Room temperature
7
Temperature of domestic hot water
8
Temperature of refrigerant at outlet /inlet of plate heat
9
exchanger when in heat mode/cool mode
Temperature of refrigerant at inlet /outlet of plate heat
10
exchanger when in heat mode/cool mode
11 Temperature of water at outlet of plate heat exchanger
Temperature of water at inlet of plate heat exchanger
12
Ambient temperature
13
Current of backup heater 1
14
Current of backup heater 2
15
Error/protection code for the last time,'—'will display if no
16
error/protection occur
Error/protection code for the second last time,'—'will
17
display if no error/protection occur
Error/protection code for the third last time,'—'will display
18
if no error/protection occur
Version of software(hydraulic module)
19
C N 1 5
C N 1 3
C
S 1 S 2
S W 4
Q U E R Y
check button
O X C O N T R O L B O A R D
C N 1 2
C N 2 C
Implication
10.1 Error codes
When a safety device is activated, an error code will be displayed
on the user interface.
A list of all errors and corrective actions can be found in the table
below.
Reset the safety by turning the unit OFF and back ON.
In case this procedure for resetting the safety is not successful,
contact your local dealer.
C N 4 0
Error
Failure cause
code
C N 1 4
N 3 4
Water flow fault
E0
C N 2 5
（Three times E8）
Power fault (only for
E1
three phase unit)
C N 2 7
Communication fault
between controller(use
C N 3 7
E2
inter face) and indoor
unit
Indoor unit(hydro-box)
C N 2 4
water outlet
E3
temperature
sensor(T1) fault
C N 2 8
Water(domestic hot
water) tank
E4
temperature
sensor(T5) fault
C N 2 0
Outdoor unit exchange
N 1
E5 temperature sensor
(T3) fault
Outdoor unit ambient
E6 temperature
sensor(T4) fault
E8 Water flow fault
44 4
Corrective action
Refer to E8
Connect the power supply cables in
normal phase. Change any two of
the three power supply cables (L1,
L2 , L3) to correct phase
Check the wiring between user
interface and unit,or contact your
local dealer
Contact your local dealer.
Contact your local dealer.
Contact your local dealer
Contact your local dealer
• Check that all shut off valves of the water
circuit are completely open.
• Check if the water filter needs cleaning.
• Check that the unit is operating within its
operating range (refer to "TECHNICAL
SPECIFICATIONS").
• Also refer to "Charging water"
• Make sure there is no air in the system
(purge air).
• Check on the manometer that there is
sufficient water pressure. The water
pressure must be >1 bar (water is cold).
• Check that the pump speed setting is on
he highest speed.
• Make sure that the expansion vessel is
not broken.
• Check that the resistance in the water
circuit is not too high for the pump (refer to
"Setting the pump speed" ).
• If this error occurs at defrost operation
(during space heating or domestic water
heating), make sure that the backup
heater power supply is wired correctly and
that fuses are not blown.
• Check that the pump fuse and PCB fuse
are not blown.
V.1