7;
4<9A CBI9D =E :5=?GD9
\hen power is failure in running2 all the operations will stop4
Ffter beingelectrified again2 if with re3satrt up function2 the unit can resume to the state before
power off automaticallyA if without re3satrt up function2 the unit needs to be switched on again4
\hen abnormal occurs in running because of the thunder2 the lightning2 the interference of car
or radio2 etc2 please cut off the power source2 after eliminatingthe failure2 press + button
to start up the unit4
+95F=A; 75C57=FK
Yhe heatingmode adopts the heat pump type that absorbs outdoor heat energy and releases
into indoor4 Xo if outdoor temperature goes down2 the heating capacity will decrease4
indoor model@
Woom So4
e4g4 Nndoor F2 system 72 Kloor 8 8K37F
1KEF9@ @5D>E
Tn the condition that multi RW[NN3X systems are installed2 in order to confirm the relationship
between outdoor and indoor2 please make marks on outdoor electric control box cover to indicate
the connected indoor unit4 Fs the below figure@
2D=5? BC9D5F=BA
Yrial operation
Nn trial operation2 refer to the information of performance section4 \hen the unit can not start
up at the room temperature2 make trial operation for outdoor4
Honfirm the compressor bottom getting hot4
Jxcept for the condition that there is only one master unit connected .no slave unit/2 under the
other conditions2 open fully the outdoor operatingvalves .gas side2 liquid side/4 Nf operatingthe
unit without openingthe valves2 compressor failure will occur4
Honfirm all indoor units beingelectrified4 Nf not2 water leakage will occur4
Reasure the system pressure with pressure gauge2 at the same time2 operate the unit4
Gefore trial operation@
Gefore beingelectrified2 measure the resistor between power terminal block .live wire and neutral
wire/ and the earthed point with a multimeter2 and check if it is over 7R
4 Nf not2 the unit can
not operate4
Yo protect compressor2 electrify the outdoor unit for at least 78 hours before the unit runs4Nf the
crankcase heater is not electrified for < hours2 the compressor will not work4
Yrial operation and the performance
Summary of Contents for MRVII-S AU282FHERA
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