23
Installation and Maintenance
Service Manual
0DOIXQFWLRQ&KHFNLQJDQG(OLPLQDWLRQ
Compressor overload protection
Viewing malfunction code
through remote controller within
200s; displayed directly on
nixietube after 200s
H3
PLnoitcnuflamerawdraHhctamtonodtinuroodtuodnatinuroodnI
EEnoitcnuflamerawdraHpihcyromemfonoitcnuflaM
Wrong connection of communication wire or malfunction of
electronic expansion valve
Hardware malfunction
dn
3LnoitcnuflamerawdraH1nafroodtuofonoitcetorpnoitcnuflaM
Detection status of wrong connection of communication wire
or malfunction of electronic expansion valve
Operation status
dd
7EsutatsnoitarepOtcilfnocedoM
oFsutatsnoitarepOedomgnilcycertnaregirfeR
LAsutatsnoitarepOnaf-X
1HsutatsnoitarepOedomgnitaehninruterliorognitsorfeD
Start failure of compressor
Viewing malfunction code
through remote controller within
200s; displayed directly on
nixietube after 200s
Lc
4ErosserpmocfonoitcetorperutarepmetegrahcsidhgiH
Overload protection E8
5EnoitcetorptnerrucrevotinuelohW
5PnoitcetorptnerrucesahprosserpmoC
Compressor desynchronizing H7
dLnoitcetorpesrevni-esahp/gnikcal-esahprosserpmoC
IPM modular protection H5
DC bus-bar low volt LPnoitcetorpega
HPnoitcetorpegatlovhgihrab-subCD
PFC protection HC
7Ulamronbasievlavyaw-ruofehT
18K: 24K:
Note: discharge the position in below pictures with discharge resistance after open the top cover and
check if the voltage is belo
w 20V with universal meter, then begin to check.
1 IPM protection malfunction:
Main checking point:
● If the input voltage of the unit is within normal range?
● If the connection wire of compressor is connected well
? Is it loose? If the connection sequence is correct?
● If the resistance of compressor coil is normal? If the isolation of compressor coil with copper pipe is good?
● If the unit is overloaded? If the heat radiation of the unit is good?
●
If the refrigerant charge is suitable?
Flow
chart:
To Next Page
Loading...
Need help?
General
