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Method B: Changing outdoor unit setting to ignore capacity
Another possibility is to change the outdoor unit settings by using a separate standard wired remote
controller, CZ-RTC2 or CZ-RTC4, which can be obtained from Panasonic as optional service parts.
i
Important
Method B is only applicable to the following combinations of PACi outdoor units and AHU Kits:
● PACi PZH2 outdoor units (R32) and PAH3 AHU Kit model
Required accessories:
● Optional standard wired remote controller: CZ-RTC2 or CZ-RTC4 (available from
Panasonic as optional service
CV6233317854)
● Optional special service wiring: CV6242785082 or PAW-MRC (available from
Panasonic as optional service parts) or alternative connector
To connect the remote controller and subsequently change the relevant settings, complete the
following steps:
1. Connect the maintenance remote controller to the blue 3-pole CN-RC plug on the main PCB of
the PACi outdoor unit using the optional special service wiring CV6242785082 or PAW-MRC
(as an alternative, you can also use any unused indoor unit connector (E3, PNL, FS, RC) or
temporarily disconnect one of those wires from the AHU kit itself).
Depending on the PACi outdoor unit model, the CN-RC plug can be found at the following
position:
Outdoor unit maintenance remote
controller
2. Verify that the display of the maintenance remote controller is working.
3. Simultaneously press the "Spanner" and "Leave Home" buttons for at least 4 seconds.
Depending on which model you are using as maintenance remote controller, CZ-RTC2 or
CZ-RTC4, the buttons look differently and are located at different positions:
4. With the Temperature "UP" and "DOWN" buttons (▲▼) scroll to parameter "07".
5. With the Timer "UP" and "DOWN" buttons (▲▼) change the parameter value from the factory
default "000" to "001".
6. Confirm the new setting by pressing the "SET" button followed by the "Spanner" button.
7. After that, you can disconnect the maintenance remote controller from the outdoor unit PCB.
AHU Kit – Installation Instructions – 07/2023
parts,
Optional special service wiring
(CV6242785082 or PAW-MRC)
Standard wired
remote controller
CZ-RTC4
(CV6233317854)
CZ-RTC2
CZ-RTC2: CV6233169033 and CZ-RTC4:
CN-RC
Elite –
U-200PZH2E8
U-250PZH2E8
CZ-RTC4
Installation
R32
47
4
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