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40MAHB: Service Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

INQUIRY MODE

To enter the Inquiry Mode:

Press and hold together the On/Off and Fan buttons for 8 seconds. The remote control remains in Inquiry Mode for 1 minute if no button is

pressed. In the Inquiry Mode, the remote display cancels all icons except AUTO, COOL, DRY, HEAT and battery strength. The digital display

defaults to “0” upon entering the Inquiry Mode. In Inquiry Mode, each digital code (from 0 to 30) is accessed by pressing the UP or DOWN arrow.

Fig. 17 — Up and Down Arrow

The Inquiry information displays on the high wall indoor unit display in approximately 1 second of accessing the digital code. Press OK to send as

well.

Table 3 — Inquiry Codes and Symbols

To exit the Inquiry Mode:

Press and hold together the On/Off and Fan buttons for 2 seconds

CODE INQUIRY SYMBOL DESCRIPTION

Code 0 None

Code 1 T1 Indoor ambient

Code 2 T2 Indoor pipe

Code 3 T3 Outdoor pipe

Code 4 T4 Outdoor air

Code 5 TP (T5) Compressor discharge

Code 6 FT Compressor target frequency

Code 7 Fr Compressor run frequency

Code 8 dL Unit amperage

Code 9 Uo Unit voltage

Code 10 Sn Capacity test (special usage)

Code 11 ---- N/A

Code 12 Pr Indoor fan speed

Code 13 Lr Electronic Expansion Valve (EEV) opening

Code 14 ir Indoor fan speed

Code 15 HU Humidity

Code 16 TT Setpoint compensation temperature

Code 17 dT Dust concentration (not used)

Code 18 WIFI Wi-Fi signal strength

Code 19 ---- N/A

Code 20 oT Indoor fan target frequency

Code 21 ---- N/A

Code 22 ---- N/A

Code 23 ---- N/A

Code 24 ---- N/A

Code 25 ---- N/A

Code 26 ---- N/A

Code 27 ---- N/A

Code 28 ---- N/A

Code 29 ---- N/A

Code 30 ---- N/A

Brand	Carrier
Model	40MAHB Series
Category	Air Conditioner
Language	English

Carrier 40MAHB Series User Manual

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