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Installation manual

13

RZQS71~125B7V3

Split System air conditioners

4PW32097-1

6

A complete test run surely includes shutting off power after
having performed a normal operation stop on the remote
controller. Do not stop operation by turning circuit breakers off.

Failure diagnosis at the moment of first installation

In case nothing is displayed on the remote controller (the current set
temperature does not display), check for any of the following
abnormalities before you can diagnose possible malfunction codes.

Disconnection or wiring error (between power supply and
outdoor unit, between outdoor unit and indoor units, between
indoor unit and remote controller).

The fuse on the outdoor unit PCB may have run out.

If the remote controller shows 

L8

 as an error code, there is a

possibility that either the shut-off valve is closed, or the outlet
vent is closed.

If the error code 

U2

 is displayed on the remote controller, check

for voltage imbalance.

If the error code 

U4

  or  

UF

  is displayed on the remote

controller, check the inter-unit branch wiring connection.

The reversed phase protection detector of this product only
works during the initialisation stage after a power reset.
The reversed phase protection detector is designed to stop the
product in case of an abnormality when the product is started
up.

When the reversed phase protection circuit forced the unit to
stop, check if all phases are existing. If this is the case, shut
off the power supply to the unit and replace two of three
phases. Turn on power again and start the unit.

Reversed phase detection is not performed while the product
is operating.

In case of possible reversal of phases after a momentary
black out of power and the power goes on and off while the
product is operating, install a reversed phase protection
circuit on site. Such situation is not unimaginable when using
generators. Running the product in reversed phase can
break the compressor and other parts.

D

ISPOSAL

 

REQUIREMENTS

Dismantling of the unit, treatment of the refrigerant, of oil and of other
parts must be done in accordance with relevant local and national
legislation.

N

OTES

 

Summary of Contents for RZQS71B7V3

Page 1: ...INSTALLATION MANUAL RZQS71B7V3 RZQS100B7V3 RZQS125B7V3 Split System air conditioners...

Page 2: ...7 6 6 8 3 3 1 3 2 4 5 A B A E B C D H H1 L1 H1 H2 L3 L1 L2 H1 H2 L4 L1 L3 L2 H1 H2 L7 L1 L6 L5 L4 L3 L2 A A B2 B2 B2 C C D1 D1 D1 D2 D2 D2 D2 D2 E E H H L1 L1 L1 L2 L2 L2 A A B1 B1 B1 B1 B1 B1 B2 B2 B...

Page 3: ...u condi ia ca acestea s fie utilizate n conformitate cu instruc iunile noastre 19 skladni z naslednjimi standardi in drugimi normativi pod pogojem da se uporabljajo v skladu z na imi navodili 20 on va...

Page 4: ...on may result in water leakage electric shocks or fire Perform installation work in accordance with this installation manual Improper installation may lead to water leakage electric shocks or fire Whe...

Page 5: ...rding to national regulations Do not connect the earth wire to gas or water pipes lightning conductor or telephone earth wire Incomplete grounding may cause electric shocks Gas pipe Ignition or explos...

Page 6: ...ration of the operational capacity Frequent frost acceleration in heating operation Disruption of operation due to rise of high pressure When a strong wind blows continuously on the face of the unit t...

Page 7: ...pe disposal If drain pipe disposal from the outdoor unit causes trouble for example if the drain water may splash on people provide the drain piping using a drain socket optional Make sure the drain w...

Page 8: ...e sizes must have the same size as the connected indoor units pipe sizes Branch see marking on figures 3 4 and 5 Selection of branch pipe L A L H 0 L 1 2H 150 250 1 2H L 200 300 H L Installation impos...

Page 9: ...nch pipe to the indoor unit should be as short as possible Try to keep lengths of both branch pipes to the indoor unit equal REFRIGERANT PIPING Field pipes can be installed in four directions Figure F...

Page 10: ...r to the figure Take care not to damage it After operating the valve be sure to tighten the valve cover properly Check for refrigerant leakage after tightening the cap Cautions for handling service po...

Page 11: ...f oxidised film on the inside of the pipes adversely affecting valves and compressors in the refrigerating system and preventing normal operation When brazing pipes however do not use oxidation preven...

Page 12: ...0 m G1 G2 30 m Based on this decide R2 in the table R1 0 3 Total additional charge amount R R1 R2 kg Table 2 Length unit m additional charging of refrigerant unit kg Example 1 1 G1 L1 35 m G2 L2 L3 7...

Page 13: ...e bundled cables into a unit Fix cables so that cables do not make contact with the pipes especially on high pressure side Secure the electrical wiring with clamping material as shown in the figure be...

Page 14: ...wiring works Form the wires and fix the cover firmly so that the cover may be fit in properly Precautions on wiring of power supply and inter unit wiring Use a round crimp style terminal for connectio...

Page 15: ...pt displaying the heating symbol all the time and the unit will switch to heating operation automatically after elapse of that time 2 In case you cannot operate the unit in test run mode for any unusu...

Page 16: ...r code U4 or UF is displayed on the remote controller check the inter unit branch wiring connection The reversed phase protection detector of this product only works during the initialisation stage af...

Page 17: ...r air R2T Thermistor coil R3T Thermistor discharge pipe R4T Thermistor suction pipe R5T Thermistor power module RC Signal receiver circuit S1NPL Pressure sensor low S1PH Pressure switch high S1PL Pres...

Page 18: ...Zandvoordestraat 300 B 8400 Oostende Belgium 4PW32097 1...

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