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MULTI V 5 Outdoor Unit Service Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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Auto pipe detection is complete.
Are the numbers
of indoor units connected to the
outdoor unit and displayed on the
LED the same?
Reset the power of heat recovery unit PCB.
Confirm that the settings of Nos. 2, 3 of
SW02M correspond to the number of ports
used.
Select the “Id 5” “Ath” or “Atc” function
using Ź
DQGŻWKHQpush the Ɣ button.
If outdoor temperature is >59°F, use “Ath”.
If that does not work, use “Atc.”
If outdoor temperature is <59°F, use “Atc”.
If that does not work, use “Ath.”
Select the “Id 6 StA” function using ŹDQG
Żthen push the Ɣ button.
"88" displays on the LED of the outdoor unit
main PCB.
Outdoor unit operates for five (5) to sixty
(60) minutes.
The number of indoor units detected is
displayed for thirty (30) seconds to one (1)
minute on the outdoor unit PCB after the
outdoor unit stops.
Display error on outdoor unit PCB.
Display error on heat recovery unit PCB.
Outdoor unit PCB: HR ĺ HR unit
number ĺ Valve number
Heat recovery unit: "200"
Check heat recovery and indoor
units.
Pipe detection error occurs after
thirty (30) seconds.
Check the pipe installation of the
outdoor, indoor, and heat recovery
units.
Auto pipe detection is incomplete.
Retry the auto pipe detection
procedure after troubleshooting.
Is the pipe setting condition
satisfied during indoor unit operation?
Confirm indoor unit address settings.
Turn No. 1 of SW02M of heat recovery unit
PCB to OFF.
Select the “Idu” mode using ŹDQGŻWKHQ
push the Ɣ button.
NO
NO
YES
YES
Turn master outdoor unit PCB No. 5 DIP
switch to ON.
Select the “Idu” mode using ŹDQGŻWKHQ
push the Ɣ button.
Optional (based on site requirements):
If a large capacity indoor unit is installed:
Check the settings of Nos. 4, 5, 6 on
SW02M.
If zoning, confirm Nos. 7, 8 of SM02M are set
to ON, then confirm that the individual port
DIP switch is in the ON position for SW01M.
Figure 48: Auto Addressing for Pipe Detection Procedure Flowchart.
PIPE DETECTION ADDRESSING
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