Haier Arctic Multi 2U20EH2VHA Manuale di riferimento

DFS05-19

DFS05-19

Multi-Split Communication Wiring Check

The FlexFit Multi and Arctic multi systems are capable of performing a self-test to check

communication wiring between the outdoor to the indoor units. This is a crucial step when performing

start-up on a system as well as performing checks during a service call. It allows you to confirm that

the wiring matches with the associated refrigerant lines for a given circuit.

Arctic Multi 2U20EH2VHA

3U24EH2VHA

FlexFit Multi 3U24MS2VHB

4U36MS2VHB

1

Models affected:

Instructions:

1. Disconnect power to the outdoor unit.

2. Set Dip Switches SW1-1, SW1-2, SW1-3 &

SW1-4 to the ON position. These dip

switches are located on the Service Monitor

Board. (pictured right).

3. Turn ON power to the outdoor unit.

JUNE 2019

Service Bulletin

SW1

Testing Process:

1. All indoor fans will come on at HIGH fan speed.

2. EEV for Circuit A will open.

3. All other EEV’s will close.

4. After a 3 minute delay, the Compressor will start and ramp up to 55HZ.

5. The digital display will alternately display “CH” and “Compressor Frequency (HZ)” at

5-second intervals (pictured below).

6. The system will circulate refrigerant through Circuit Afor about 10 minutes.

7. Afterwards, Circuit A’s EEV will close and Circuit B’s EEV will open.

8. This process will be repeated for each indoor unit that is connected.

2

Service Bulletin

JUNE 2019

DFS05-19

DFS05-19

Testing Process (continued):

9. Once all indoor units have been checked, the digital display will show either “EC” or “0”

•“EC” indicates there is an error in the wires to the indoor unit(s).

•The LED(s) will be flashing, indicating which circuit(s) has the fault.

•For example, if the wires for circuit A and B are switched, then LED1 and

LED 2 will flash.

•Once the wiring is corrected, re-run this test to confirm everything is functional.

o“0”indicates that all wiring is correct.

oIf all the wiring is correct, the LED’s remain solid.

10. Once the test is complete, make sure to change the dip switches back to the OFF

position.And set each indoor unit to preferred set points.

3

Service Bulletin

JUNE 2019

DFS05-19

DFS05-19

Questo manuale è adatto per i seguenti modelli

5

Indice

Altri manuali Haier Condizionatore d'aria

Haier

Haier HSU-18CVY03 Manuale utente

Haier

Haier 1U50KEFFRA-1 Manuale utente

Haier

Haier AS102ALARA Manuale utente

Haier

Haier HSU-09LA03 Manuale utente

Haier

Haier HSU-09HC03-R2 Manuale utente

Haier

Haier HC18-60A1VAR/S Manuale utente

Haier

Haier AD092XLERA Manuale utente

Haier

Haier Super Match 3U19FS2ERA Manuale utente

Haier

Haier HSU-14HR03/R2 Manuale di istruzioni

Haier

Haier H2SM- Manuale utente

Haier

Haier HSU-10HM03 Manuale utente

Haier

Haier AD182MMERA Manuale utente

Haier

Haier 1U50MEGFRA Manuale utente

Haier

Haier ESA3067 - annexe 1 Manuale utente

Haier

Haier 3U55S2SR2FA Manuale utente

Haier

Haier HSU-09XC7 Manuale utente

Haier

Haier 1U50REJFRA Manuale utente

Haier

Haier HSU-07HR03 Manuale utente

Haier

Haier AS68TEBHRA Manuale utente

Haier

Haier CA0065EANR Manuale utente

Haier

Haier EST08XCP Manuale utente

Haier

Haier GE NS18A24TA4 Manuale utente

Haier

Haier HWF05XC3 Manuale utente

Haier

Haier ESA405R Manuale utente

Manuali Condizionatore d'aria popolari di altre marche

Spheros

Spheros CC 355 Manuale utente

Bosch

Bosch Climate 5000 SCI 24 CAS/ OU- OUE Manuale utente

Panasonic

Panasonic CS-E12HKEW Manuale utente

nedis

nedis ACMB1WT7 Manuale utente

Samsung

Samsung AR KV Series Guida

Daikin

Daikin FCFV50A Manuale utente

Fujitsu

Fujitsu Inverter ASBA30JFC Manuale utente

Toshiba

Toshiba RAS-M10SMUV-E Manuale utente

Daikin

Daikin FXLQ20MAVE Manuale utente

Hitachi

Hitachi RAS-E24CAK Manuale utente

CIAT

CIAT Magister 2 Series Guida

Bestron

Bestron AAC6000 Manuale utente

Hisense

Hisense 7K Manuale tecnico

Frigidaire

Frigidaire FFRE0533S1E0 Manuale utente

Samsung

Samsung AS09HM3N Manuale utente

Frigidaire

Frigidaire CRA073PU11 Manuale del proprietario

Soleus Air

Soleus Air GB-PAC-08E4 Manuale utente

McQuay

McQuay MCK020A Manuale utente