190
DC Inverter Multi
VRF Service Manual
2�12 IPM Protecion
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
E5 is displayed on
the wired controller
IPM protection
Monitoring
display
Nixie tube of
mainboard
It is recorded
Is it wet,dirty or
short-circuit?
Inspect the mainboard 1 min
after power off or the buss
voltage is below 36V
Dry, and clean it or
remove short circuit.
Restart the unit.
Does it work normally?
1. If it is affected by damp, find out the
reason and take some precautionary
measures. After drying the mainboard
,
brush it with damp proof gum water
.
2. If it is polluted, find out the reason
and protect it from dust . If the
environment is bad, clean the dirt
periodically.
3. If it is short-circuit, find out the
Is IPM
module of mainboard
damaged?
Display H5
Replace mainboard
Is compressor
wire loose or is phase
sequence wrong?
Tighten the
compressor wire or adjust
the phase sequence
reason and clean the electric box so
as to prevent the conductive matter
such as iron chippings adhering on
the board
.
Is + 15V
of mainboard stable?
15VA-pin 1,2
Содержание CN851W1000
Страница 1: ...DCINVERTERMULTIVRFSERVICEMANUAL T1 R410A 50Hz GC201107 CENTRAL AIR CONDITIONERS ...
Страница 6: ...DC Inverter Multi VRF Service Manual 1 PRODUCT PRODUCT ...
Страница 24: ...DC Inverter Multi VRF Service Manual 19 CONTROL CONTROL ...
Страница 92: ...DC Inverter Multi VRF Service Manual 87 INSTALLATION ...
Страница 146: ...DC Inverter Multi VRF Service Manual 141 ENGINEERING DEBUGGING ...
Страница 171: ...166 DC Inverter Multi VRF Service Manual MAINTENANCE ...
Страница 201: ...196 DC Inverter Multi VRF Service Manual GMV Pdm335W NaB M GMV Pdm400W NaB M GMV Pdm450W NaB M ...
Страница 233: ...JF00300207 ...