Hitachi PC-ARH1E - Checking Procedure


Communication cable shall be eld supplied
• OPTION 1:
Twist pair cable 2 x 0,75 mm
2
(200m total max. length).
(Terminal board
side)
Solder less terminal
(x type 1.25-3X)
(Remote Control
switch side)
• OPTION 2:
Standard shielded cable 2 x 0,75 mm
2
connecting the
shield to earth at the electrical box side
(200m total max. total length).
(Terminal board
side)
(Remote Control
switch side)

Optional Accessory Cable
The cables (2x0.75 mm
2
twist wire) of different length
arepreparedasanoption,whicharettedwith
connectors.
Remote Control Cable (Option)
Cable Model Length (m)
PRC-10E1 10
PRC-15E1 15
PRC-20E1 20
PRC-30E1 30
4 CHECKING PROCEDURE
PC-ARH1E doesn’t have Test Run mode.
The test running shall be performed from the outdoor units.
1 Turn ON the power for all the indoor units.
2 Modelswithautomaticaddressingwilltakethreetove
minutes to complete the setting.
3 Set the Test Run mode from the outdoor units.
4 Cancellation the Test Run mode
The Test Run mode can be cancelled when:
• TheTestRunwillbenishedautomaticallyaftertwohoursof
running.
• Cancellation the Test Run from the outdoor units.
• Stop the Test Run by pressing the Run/Stop switch of the
PC-ARH1E.
The total number of the indoor units connected will be indicated
on the temperature display.
? NOTE
Displayindicationwhenoneindoorunitisconnected
Example when one unit is connected.
In case that the indicated number of connected units is incorrect,
any transmission abnormality due to, an incorrect wiring/
addressing or noise may exist. In such a case, turn OFF the
power supply and check the following.
? NOTE
DO NOT repeat the ON/OFF operation of the main switch within 10
seconds.
1 Indoor units power supply not turn ON, or incorrect wiring
2 Incorrect wiring connection between indoor units or of remote
controllers
3 Incorrect setting of rotary switch (overlapped setting)
! CAUTION
• PC-ARH1EmemorizesTestRunoperationmode.Theunitswillstart
intheTestRunmodeifthemodeofoperationisnotchangedfromthe
centralcontrolequipmentwhichwillbeusedwiththeunitaftertheTest
Run,orfromtheremotecontrolswitch.
• Change the mode of operation using these devices or refer to
“7OPTIONALFUNCTION”(H3OperationModeChangeRestriction–
00:UnlimitedOperation)aftertheTestRun.
CHECKING PROCEDURE
PMML0497 rev.1 - 12/2020
3
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