Maintenance; Filter Cleaning; Adding Water To Circuit; Diagnostics - CIAT YUNA II series Installationsanleitung

   
Refer to the Safety Information Manual.
The equipment should be serviced periodically to maintain
performances and reliability.
The product warranty may be invalidated due to wrong or
incomplete maintenance.
The user is not authorized to open the unit or remove any
of its parts.
Any maintenance activity requiring opening of the unit
MUST BE CARRIED OUT BY QUALIlED SERVICE PERSONNEL
Carry out the following operations at least once a year:
s #HECK THE EXPANSION VESSEL
s #HECK ALL THE PARTS FOR WEAR
s #HECK SETPOINTS AND OPERATING POINTS
s #HECK SAFETY DEVICES
s #HECK ELECTRICAL CONNECTIONS FOR TIGHTNESS
s #HECK THE EARTH CONNECTIONS
s #HECK FOR WATER AND REFRIGERANT LEAKS
s #HECK OPERATION AND PARAMETERS
s #LEAN THE WATER lLTER
s #HECK THE ROTATION OF PUMPS
s #HECK THE SYSTEM PRESSURE
s #LEAN THE OUTDOOR UNIT HEAT EXCHANGER
s #LEAN THE CONDENSATE TRAY
Error Item Failure when
code
2 ½ÅȽʹÌÍʽ Value out of range + Code 105.0 =
humidity sensor 1 or 4
of user interface
in zone 1
3 TWB Value out of range
4 TC Value out of range
5 Domestic hot Value out of range + Code 133 = 1
water or 2
temperature
sensor
6 Communication Communication lost
with user
interface
(conneted to
W-CG- Y terminal
blocks)
7 Communication Communication lost + Code 105.0
with additional = 1
user interface
(connected to
Rc-Rh-G2-Y2
terminal blocks)
in zone 1
8 Flowswitch Water pump is OFF.
ÄÇÏ ËÏÁÌ»À ¼½Ì½»ÌË ÇÏ
30

6.1 - Filter Cleaning

s 4HIS OPERATION MUST BE PERFORMED ONLY BY AN
authorized service personnel.
s #LEAN THE lLTER FREQUENTLY IF LOW WATER mOW IS DETECTED
s 3ELECT /&& MODE ON THE USER INTERFACE
s 3WITCH THE MAIN SWITCH /&&
s #LOSE THE VALVES AT THE BOTTOM OF THE HYDRONIC MODULE
s /PEN THE lLTER AND CLEAN IT
s #LOSE THE lLTER TIGHT TO AVOID WATER LEAKAGE
s /PEN THE VALVES AT THE BOTTOM OF THE HYDRONIC MODULE
s !DD SOME WATER IF NEEDED
s 3WITCH THE MAIN SWITCH /.
s 3ELECT THE DESIRED MODE ON THE USER INTERFACE

6.2 - Adding Water to Circuit

This operation can be performed by the user.
&OR SAFETY REASON DO ./4 OPEN THE INDOOR OR OUTDOOR
unit.
The corrected operating pressure is 1 bar; if the pressure is
LOWER THAN  BAR IT IS NECESSARY TO ADD WATER IN THE CIRCUIT
3EE lG  AND 
s /PEN THE lLLING VALVE
s #LOSE THE lLLING VALVE WHEN THE WATER PRESSURE REACHES
 BAR CHECK THE MANOMETER 

6.3 - Diagnostics

)N CASE OF SYSTEM FAILURE THE ALARM ICON
on the user interface.
&AILURES ARE IDENTIlED BY A FAULT CODE
!CTIVE FAULT CODES WILL BE DISPLAYED IN SEQUENCE WITH A
change rate of 1 second.
Consequences
Hydronic module fault codes
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Related functions are not available.
Backup heaters are OFF
Outdoor unit stops Domestic water valve OFF if
code 127=1
Booster heater OFF
Disinfection function not performed
No commuication between unit and interface.
Room temperature and humidity are not availabe
if code 105.0 = 1 or 4 or 105.1 = 1 or 4
No commuication between unit and interface.
Room temperature and humidity are not availabe
zone 1.
Unit runs with values stored in memory.
Outdoor unit, backup heaters, domestic water
valve, water pump: OFF
) will light up
Diagnostics and solutions
Check user interface wiring and electrical
connections.
Check sensor, wiring and electrical connections.
Check sensor, wiring and electrical connections.
Check sensor, wiring and electrical connections.
Check wiring and connections.
Check wiring and connections.
Check setting of code 107.1
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