Technibel Climatisation GRFMI 1158 R7I, Service Manual & Test Run Service Manual

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2-WAY MULTISET VRF SYSTEM
Trouble Diagnosis
7
1. 2WAY VRF DCI Alarm Codes
H 3 1 Alarm
Alarm code H 3 1
Alarm mea n i ng HIC tro u ble alarm
Alarm co n ditio ns Thi s alarm occ u r s whe n the microcomp u ter ide n tifie s a tro u ble s i gn al (i n dicati ng ab n ormal HIC
temperat u re or other tro u ble) from the HIC.
Probable ca us e Overc u rre n t i n HIC circ u it, a n d re su lta n t ab n ormal heati ng , ca us ed by HIC fail u re
Check Check the power wiri ng a n d co nn ector wiri ng . If the wiri ng a n d co nn ector s are n ormal, us e a
te s ter to mea su re the re s i s ta n ce betwee n the compre ss or HIC power (HIC+) a n d g ro un d (HIC–).
If there i s a s hort circ u it, there i s a n HIC malf un ctio n .
Correctio n If a n HIC fail u re i s fo un d, replace the PCB.
Example
Note
s T u r n OFF the power, a n d check the co n ti nu ity of HIC+ a n d HIC– o n the HIC PCB.
L04 Alarm
Alarm code L04
Alarm mea n i ng O u tdoor un it refri g era n t s y s tem addre ss d u plicatio n
Alarm co n ditio ns Comm un icatio n by i n ter- un it co n trol wiri ng wa s received that co n tai n ed the s ame addre ss a s that
un it 5 time s or more withi n 3 mi nu te s .
Probable ca us e I n correct o u tdoor s y s tem addre ss s etti ngs
Check Check the s y s tem addre ss s etti ngs a g ai n .
Correctio n Correct the s y s tem addre ss s etti ngs .
Example
Note
s Recovery from thi s alarm occ u r s a u tomatically (whe n comm un icatio n that co n tai ns the s ame
addre ss a s that un it i s n ot received for 3 mi nu te s after detectio n ).
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The HIC j u d g e s the c u rre n t a n d temperat u re, a n d o u tp u t s the tro u ble s i gn al. I n g e n eral thi s
i n dicate s tro u ble with the HIC it s elf.
L05 Alarm
Alarm code L05
Alarm mea n i ng D u plicated i n door un it priority (alarm at priority i n door un it s )
Alarm co n ditio ns M u ltiple i n door un it s s et a s the priority un it were detected.
Probable ca us e More tha n o n e i n door un it i s s et a s the priority un it.
Check From the wired remote co n troller, us e the i n door un it EEPROM s imple s etti ngs mode a n d
check whether or n ot the val u e for item code 04 i s “0001.”
Correctio n If the val u e of i n door un it EEPROM item code 04 i s i n correct, s et the correct val u e from the
wired remote co n troller.
Example
Note s
Thi s alarm i s di s played at the i n door un it s which are s et a s the priority un it. At i n door un it s which
are n ot s et a s the priority un it, alarm L06 i s di s played.
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HIC PCB
HIC + HIC –