Hitachi RAF-35RPA RAF35RPA User Manual

Product codes

RAF35RPA

CONTENTS

13.3.1

Procedures of Wiring

___________________ 13-7

13.3.2

Electrical Wiring for Indoor unit

___________ 13-8

13.3.3

Electrical Wiring for Outdoor unit

_________ 13-10

TROUBLESHOOTING

________________________ 14-1

14.1

PRECAUTIONS FOR TROUBLE SHOOTING

______ 14-3

14.1.1

MONOZONE RAC-25NPA / 35NPA /

50NPA

_________________________ 14-3

14.1.2

MULTIZONE RAM-36NP2A

______________ 14-3

14.1.3

MULTIZONE/MONO SPLIT RAM-53NP2A /

53NP3A / 68NP3A / 70NP4A , MONO SPLIT
RAF-50PXA/RAC-50FXA

_________________ 14-4

14.1.4

MULTIZONE RAM-90NP5A

______________ 14-4

14.1.5

MULTIZONE RAM-130NP6A

_____________ 14-5

14.1.6

MONO SPLIT RAK-18/25/35PSA / RAC-

18/25/35WSA , RAK-18/25/35PSAN / RAC-
18/25/35WSAN , RAK-18/25/35PSPA / RAC-
18/25/35WSPA

_________________________ 14-5

14.1.7

MONO SPLIT RAK-18/25/35PPA / RAC-

18/25/35WPA , RAK-18/25/35/50PEA / RAC-
18/25/35/50WEA , RAF-25/35RPA / RAC-
25/35FPA

_________________________ 14-6

14.1.8

MONO SPLIT RAK-50/60/70PPA / RAC-

50/60/70WPA

_________________________ 14-6

14.1.9

MONO SPLIT RAF-50RPA / RAC-50FPA

___ 14-7

14.1.10

MONO SPLIT RAF-25/35PXA / RAC-

25/35FXA

_________________________ 14-7

14.1.11

MONO SPLIT RAD-50/60/70PPA / RAC-

50/60/70DPA

_________________________ 14-8

14.2

DISCHARGE PROCEDURE AND POWER SHUT

OFF METHOD FOR POWER CIRCUIT

___________ 14-9

14.2.1

MONOZONE RAC-25NPA / 35NPA /

50NPA & MULTIZONE RAM-36NP2A /
53NP2A / 53NP3A / 68NP3A / 70NP4A /
130NP6A & MONO SPLIT RAF-50PXA /
RAC-50FXA, RAD-50/60/70PPA / RAC-
50/60/70DPA

_________________________ 14-9

14.2.2

MULTIZONE RAM-90NP5A

______________ 14-9

14.2.3

MONO SPLIT RAK-18/25/35PSA / RAC-

18/25/35WSA, RAK-18/25/35PSAN / RAC-
18/25/35WSAN , RAK-18/25/35PSPA / RAC-
18/25/35WSPA

________________________ 14-10

14.2.4

MONO SPLIT RAK-18/25/35PPA / RAC-

18/25/35WPA, RAK-18/25/35/50PEA / RAC-
18/25/35/50WEA , RAF-25/35PXA / RAC-
25/35FXA RAF-50RPA / RAC-50FPA

______ 14-10

14.2.5

MONO SPLIT RAK-50/60/70PPA / RAC-

50/60/70WPA

________________________ 14-11

14.2.6

MONO SPLIT RAF-25/35RPA / RAC-

25/35FPA

________________________ 14-11

14.3

PRELIMINARY CHECK ON INDOOR/OUTDOOR

UNIT ELECTRICAL PARTS AND
REFRIGERATING

___________________________ 14-12

14.3.1

Support Function of Failure Diagnosis

_____ 14-13

14.4

CHECKING THE INDOOR UNIT ELECTRICAL

PARTS

____________________________________ 14-14

14.4.1

No power is detected (no operation)

______ 14-14

14.4.2

Indoor fan does not operate (others are

normal) – RAK-25/35/50PXA, RAK-
18/25/35/50/70PPA, RAK-18/25/35/50PEA,
RAF-25/35/50RPA, RAF-25/35/50PXA, RAD-
50/60/70PPA

________________________ 14-16

14.4.3

Air deflector does not move (others are

normal)

________________________ 14-16

14.4.4

Check the control P.W.B. (power circuit) –

RAK-25/35PXA, RAK-18/25/35PPA, RAK-
18/25/35/50PEA, RAF-25/35/50RPA, RAF-
25/35PXA

________________________ 14-16

14.4.5

Checking the remote controller

__________ 14-17

14.4.6

Outdoor unit does not operate (but receives

remote infrared signal)

__________________ 14-17

14.4.7

All systems stop from several seconds to

several minutes after operation is started (all
indicators are also off)

___________________ 14-18

14.5

CHECKING OUTDOOR UNIT ELECTRICAL

PARTS

____________________________________ 14-19

14.5.1

No operation or abnormal operation (RAC-

18/25/35WPA, RAC-18/25/35/50WEA, RAC-
25/35FPA, RAC-25/35FXA

_______________ 14-19

14.5.2

No operation or abnormal operation (RAC-

18/25/35WSA, RAC-25/35/50WXA, RAC-
50/60/70WPA, RAC-50FPA, RAC-50FXA,
RAC-50/60/70DPA

_____________________ 14-21

14.6

CHECKING BETWEEN GAS LEAKAGE AND

COMPRESSOR FAULTY

______________________ 14-24

14.6.1

Troubleshooting procedure (No operation,

No heating or No cooling)

________________ 14-24

14.7

TROUBLESHOOTING WHEN INDOOR TIMER

LAMP BLINKS

______________________________ 14-25

14.7.1

MONOZONE / MULTIZONE indoor

_______ 14-25

14.7.2

MONO SPLIT INDOOR (RAK-25/35PXA,

RAK-18/25/35/50/60/70PPA, RAK-
18/25/35/50PEA, RAF-25/35/50RPA)

_______ 14-26

14.7.3

MONO SPLIT INDOOR (RAK-18/25/35PSA,

RAK-18/25/35PSAn, RAK-18/25/35PSPA)

___ 14-27

14.7.4

MONO SPLIT INDOOR (RAK-50PXA)

_____ 14-28

14.7.5

MONO SPLIT INDOOR (RAF-25/35/50PXA)

________________________ 14-29

14.7.6

MONO SPLIT INDOOR (RAD-50/60/70PPA)

________________________ 14-30

14.8

TROUBLESHOOTING WHEN OUTDOOR LED

LAMP BLINKS

______________________________ 14-31

14.8.1

MONOZONE RAC-25NPA / 35NPA /

50NPA

________________________ 14-31

14.8.2

MULTIZONE

________________________ 14-32

14.8.3

COMMUNICATION ERROR DIAGNOSIS

MULTIZONE RAM- 53NP3A / 68NP3A /
70NP4A / 130NP6A

____________________ 14-33

14.8.4

COMMUNICATION ERROR DIAGNOSIS

MULTIZONE RAM-90NP5A

______________ 14-34

14.8.5

MONO SPLIT(RAC-18/25/35WPA, RAC-

25/35WXA, RAC-25/35FXA)

______________ 14-34

14.8.6

MONO SPLIT (RAC-50WXA, RAC-50FXA

_ 14-35

14.8.7

MONO SPLIT (RAC-50/60/70WPA, RAC-

50/60/70DPA)

________________________ 14-36

14.9

CHECKING POWER MODULE

_________________ 14-38

14.9.1

RAC-25NPA, 35NPA, 50NPA & RAM-

36NP2A, 53NP2A, 53NP3A, 68NP3A,
70NP4A, 130NP6A

_____________________ 14-38

14.9.2

RAM-90NP5A

________________________ 14-38

14.9.3

RAC-18/25WPA, RAC-25/35/50WXA, RAC-

25/35/50FXA

________________________ 14-39

14.9.4

RAC-35WPA

________________________ 14-39

14.9.5

RAC-50/60/70WPA, & RAC-50/60/70DPA

__ 14-40

14.10

THERMISTOR

______________________________ 14-41

14.10.1

Name and role of each thermistor

______ 14-41

14.10.2

Reference value for thermistor’s

resistance and temperature

______________ 14-41

14.10.3

Monozone Outdoor

_________________ 14-42

MISCELLANEOUS NOTE

______________________ 15-1

15.1.

INSTALLATION AT COLD REGIONS OR

SNOWFALL REGIONS.

________________________ 15-2

15.2.

INSTALLATION POINTS ON OUTDOOR UNITS IN

COLD OR SNOWFALL REGIONS.

_______________ 15-2

15.2.1.

Installation place of Cold and Snowfall

Regions

_________________________ 15-2

15.2.2.

Considerations to the Seasonal Winds and

Snowfall

_________________________ 15-2

15.2.3.

Considerations to Snowfall / Snow Buildup

__ 15-3

15.2.4.

Considerations to Sliding Snow from Roof

or SNOWFALL

_________________________ 15-4

15.2.5.

As to Proper Drainage of Defrosting

WATER

_________________________ 15-5