Hitachi YUTAKI Series - Locating the Room Unit; Communication Loss

133
System MMI Pack (Room unit and RF receiver)
SMGB0066 rev.0 - 12/2009
Controller pack
Service Manual
4

WhilestillintheTestMode,theRoomUnitshouldbelocatedtakingthefollowingintoconsiderationandreviewingthe
illustrations below:
Find a suitable location where the signal transmission is reliable. Reliable transmission is indicated when the RF 1.
ReceiverisashingthegreenLEDevery6seconds.
Install the 2.  EITHER on the wall using the wall bracket OR attach the optional table stand as shown in below.
Exit the Test Mode by pressing the 3.
or button.
 
• TheRoomUnitshouldbeinstalledinanopenspaceforbestperformanceasitisaradiofrequencydevice.
• Leaveatleast30cmdistancefromanymetalobjectsincludingwallboxesandatleast1meterfromanyother
electricalequipmentasradio,TV,PCetc.
• Donotmountontometalwallboxes.
• ItisrecommendedthattheRFReceiverisfullyinstalled.
 
IntheeventofanRFcommunicationsloss,theLEDontheRFReceiverwillindicatewhichtypeoffaulthasoccurred.
• IfthereisacommunicationsfaultbetweentheRFReceiverandtheRoomUnit,thentheLEDontheRFReceiverwill
ashredfor0.1secONeverythreeseconds.
• IfthereisafaultincommunicationsbetweentheboilerorSystemController,thentheLEDontheRFReceiverwillash
3 times quickly and then be off for three seconds.
• IfthereismorethanoneRoomUnitinstalled,asinmulti-zonesystemsforexample,andcommunicationsislostwithone
zone,thentheredLEDontheRFReceiverwillashtwotimesquicklyandthenbeofffortwoseconds.
• IfthereismorethanoneRoomUnitinstalled,asinmulti-zonesystemsforexample,andcommunicationsislostwith
bothzones,thentheredLEDontheRFReceiverwillashoncefor0.1secON,and0.9secOFF.
Oncethefaultydevicehasbeenidentied,replaceasnecessaryandfollowthere-bindingprocedureasdescribedinsection
Binding / Rebinding Procedure.