Mitsubishi Electric PU-P3VGAAPUH-P3YGAA PU-P3YGAAPUH-P4VGAA PU-P4VGAAPUH-P4YGAA PU-P4YGAAPUH-P5YGAA PU-P5YGAAPUH-P6YGAA... Operating manual

TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES·································3
2. SAFETY PRECAUTION··································4
3. COMBINATION OF INDOOR AND OUTDOOR UNITS ···6
4. PART NAMES AND FUNCTIONS··················7
5. SPECIFICATIONS···········································8
6. DATA·····························································15
7. OUTLINES AND DIMENSIONS····················18
8. WIRING DIAGRAM·······································22
9. WIRING SPECIFICATIONS··························26
10. REFRIGERANT SYSTEM DIAGRAM ··············27
11. TROUBLESHOOTING···································31
12. DISASSEMBLY PROCEDURE ·····················36
13. PARTS LIST··················································40
14. OPTIONAL PARTS························Back Cover
Outdoor unit
[model names]
PUH-P1VGAA
PUH-P1.6VGAA PU-P1.6VGAA
PUH-P1.6YGAA PU-P1.6YGAA
PUH-P2VGAA PU-P2VGAA
PUH-P2YGAA PU-P2YGAA
PUH-P2.5VGAA PU-P2.5VGAA
PUH-P2.5YGAA PU-P2.5YGAA
PUH-P3VGAA PU-P3VGAA
PUH-P3YGAA PU-P3YGAA
PUH-P4VGAA PU-P4VGAA
PUH-P4YGAA PU-P4YGAA
PUH-P5YGAA PU-P5YGAA
PUH-P6YGAA PU-P6YGAA
No.OC261
REVISED EDITION-B
R407C
Service Ref. is on page 2.
Revision:
• [PUH-5, 6YGAA1.UK PU-5, 6YGAA1.UK]
TECHNICAL CHANGES, SPECIFICATIONS,
DATA and PARTS LIST have been partially
modified.
COMPRESSOR CONVERSION KIT(TFD-230)
has been added to the PARTS LIST(page 69).
• Please void OC261 REVISED EDITION-A.
Model name indication
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2
[Service Ref.]
PUH-P1VGAA.UK
PUH-P1.6VGAA.UK PU-P1.6VGAA.UK
PUH-P1.6YGAA.UK PU-P1.6YGAA.UK
PUH-P2VGAA.UK PU-P2VGAA.UK
PUH-P2YGAA.UK PU-P2YGAA.UK
PUH-P2.5VGAA.UK PU-P2.5VGAA.UK
PUH-P2.5YGAA.UK PU-P2.5YGAA.UK
PUH-P3VGAA.UK PU-P3VGAA.UK
PUH-P3YGAA.UK PU-P3YGAA.UK
PUH-P4VGAA.UK PU-P4VGAA.UK
PUH-P4YGAA.UK PU-P4YGAA.UK
PUH-P5YGAA.UK PU-P5YGAA.UK
PUH-P6YGAA.UK PU-P6YGAA.UK
PUH-P1VGAA1.UK
PUH-P1.6VGAA1.UK PU-P1.6VGAA1.UK
PUH-P1.6YGAA1.UK PU-P1.6YGAA1.UK
PUH-P2VGAA1.UK PU-P2VGAA1.UK
PUH-P2YGAA1.UK PU-P2YGAA1.UK
PUH-P2.5VGAA1.UK PU-P2.5VGAA1.UK
PUH-P2.5YGAA1.UK PU-P2.5YGAA1.UK
PUH-P3VGAA1.UK PU-P3VGAA1.UK
PUH-P3YGAA1.UK PU-P3YGAA1.UK
PUH-P4VGAA1.UK PU-P4VGAA1.UK
PUH-P4YGAA1.UK PU-P4YGAA1.UK
PUH-P5YGAA1.UK PU-P5YGAA1.UK
PUH-P6YGAA1.UK PU-P6YGAA1.UK
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1 TECHNICAL CHANGES
(REVISED EDITION-A)
PUH-P1, 1.6, 2, 2.5, 3, 4VGAA.UK ➔PUH-P1, 1.6, 2, 2.5, 3, 4VGAA1.UK
PUH-P1.6, 2, 2.5, 3, 4YGAA.UK ➔PUH-P1.6, 2, 2.5, 3, 4YGAA1.UK
PU-P1.6, 2, 2.5, 3, 4VGAA.UK ➔PU-P1.6, 2, 2.5, 3, 4VGAA1.UK
PU-P1.6, 2, 2.5, 3, 4YGAA.UK ➔PU-P1.6, 2, 2.5, 3, 4YGAA1.UK
● Strainer (#50) for stop valve of liquid pipe side and Filter Drier are not used.
(REVISED EDITION-A)
PUH-P1, 1.6, 2, 2.5, 3, 4VGAA.UK ➔PUH-P1, 1.6, 2, 2.5, 3, 4VGAA1.UK
PUH-P1.6, 2, 2.5, 3, 4, 5, 6YGAA.UK ➔PUH-P1.6, 2, 2.5, 3, 4, 5, 6YGAA1.UK
PU-P1.6, 2, 2.5, 3, 4VGAA.UK ➔PU-P1.6, 2, 2.5, 3, 4VGAA1.UK
PU-P1.6, 2, 2.5, 3, 4, 5, 6YGAA.UK ➔PU-P1.6, 2, 2.5, 3, 4, 5, 6YGAA1.UK
●Microcomputer of Outdoor Controller Board has changed since Filter Drier is not used.
(The limit of discharging temperature has been added.)
(REVISED EDITION-A)
PUH-P5YGAA.UK ➔PUH-P5YGAA1.UK
● The method of connecting the Compressor’s terminals has changed from Faston type to
Screw type.
(REVISED EDITION-B)
PUH-P5YGAA1.UK PUH-P6YGAA1.UK
PU-P5YGAA1.UK PU-P6YGAA1.UK
● Compressor has changed due to the change in refrigerant oil.
Refrigerant oil : 3MA-POE ➔3MAW-POE
Compressor model : ZR61KCE-TFD-522 ➔ZR61KCW-TFD-522
ZR72KCE-TFD-522 ➔ZR72KCW-TFD-522
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2SAFETY PRECAUTION
Cautions for using with the outdoor unit which adopts R407C refrigerant.
· Do not use the existing refrigerant piping.
-The old refrigerant and refrigerant oil in the existing piping contains a large amount of chlorine which may cause the refriger-
ant oil of the new unit to deteriorate.
· Do not use copper pipes which are broken, deformed or discolour .
In addition, be sure that the inner surfaces of the pipes are clean, free of hazardous sulphur and oxides, or have no dust /
dirt, shaving particles, oils, moisture or any other contamination.
-If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the refrigerant oil will
result.
· Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before
brazing. (Store elbows and other joints in a plastic bag.)
-If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result.
· Use ester oil, ether oil or alkyl benzene (small amount) as the refrigerant oil to coat flares and flange connections.
-The refrigerant oil will degrade if it is mixed with a large amount of mineral oil.
Use liquid refrigerant to fill the system.
-If gas refrigerant is used to fill the system, the composition of the refrigerant in the cylinder will change and performance
may drop.
· Do not use a refrigerant other than R407C.
-If another refrigerant (R22, etc.) is used, the chlorine in the refrigerant may cause the refrigerant oil to deteriorate.
· Use a vacuum pump with a reverse flow check valve.
-The vacuum pump oil may flow back into the refrigerant cycle and cause the refrigerant oil to deteriorate.
· Do not use the following tools that are used with conventional refrigerant.
(Gauge manifold , charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, vacuum gauge,
refrigerant recovery equipment)
-If the conventional refrigerant and refrigerant oil are mixed in the R407C, the refrigerant may deteriorated.
-If water is mixed in the R407C, the refrigerant oil may deteriorate.
-Since R407C does not contain any chlorine, gas leak detectors for conventional refrigerant will not react to it.
· Do not use a charging cylinder.
-Using a charging cylinder may cause the refrigerant to deteriorate.
· Be especially careful when managing the tools.
-if dust, dirt, or water gets in the refrigerant cycle, the refrigerant may deteriorate.
· Do not use the drier which is sold in the field.
-The drier for R407C refrigerant is pre-attached to outdoor unit refrigerant circuit.
-Some drier in the field are not in conformity with R407C refrigerant.
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[3] Refrigerant recharging
(1) Refrigerant recharging process
1Direct charging from the cylinder.
·R407C cylinder are available on the market has a syphon pipe.
·Leave the syphon pipe cylinder standing and recharge it.
(By liquid refrigerant)
(2) Recharge in refrigerant leakage case
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release the refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
Gravimeter
Unit
[1] Service tools
Use the below service tools as exclusive tools for R407C refrigerant.
No. Tool name Specifications
1Gauge manifold ·Only for R407C.
·Use the existing fitting SPECIFICATIONS. (UNF7/16)
·Use high-tension side pressure of 3.43MPa·G or over.
2Charge hose ·Only for R407C.
·Use pressure performance of 5.10MPa·G or over.
3Electronic scale
4Gas leak detector ·Use the detector for R407C.
5Adapter for reverse flow check. ·Attach on vacuum pump.
6Refrigerant charge base.
7Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)
·Cylinder with syphon
8Refrigerant recovery equipment.
[2] Notice on repair
·After recovering the all refrigerant in the unit, perform repair work.
·Do not release refrigerant in the air.
·After completing the repair work, recharge the specified amount of liquid refrigerant.
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