Technibel GRF314M35IAA Technical & Service Manual Download Page 30 | Manualshive

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When defrost operation
begins, frost has formed
on the outdoor unit
(when the ambient air
temperature is low).

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Outdoor heat

exchanger temperature

Fig. 1

Table 1

–13

0

– 8
– 9

–15
– 21

L1

L2

Outdoor air
temperature

End temperature

Defrost
operation time

Coil temperature
for ending defrost

Less than 2 minutes

Not ended

2 minutes or more

*

1 10

°

C or higher

*

1 The temperature for ending defrost is 7

°

C or higher when the

outdoor air temperature is less than 0

°

C.

«
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Summary of Contents for GRF314M35IAA

Page 1: ...ecial attention when servicing the unit 4 room multi Outdoor unit Combined Indoor Units 1 How these units may be combined is given in the Unit Combination Tables in the Appendix 2 Be sure to operate t...

Page 2: ...ng Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air...

Page 3: ...rrent Control 18 8 3 Low Start Current 18 8 4 Compressor Temperature Control 18 8 5 Outdoor Fan Control 18 8 6 Control at HEAT Start up 19 9 TROUBLESHOOTING 9 1 Conditions That Do Not Represent Troubl...

Page 4: ...RANGE Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Maximum 32 C D B 23 C W B 43 C D B Minimum 19 C D B 14 C W B 19 C D B Heating Maximum 27 C D B 24 C D B 18 C W B Minimum 16 C...

Page 5: ...m in 6 35 1 4 4 tube diameter Wide tube mm in 9 52 3 8 3 mm in 12 7 1 2 1 Dimensions Weight Unit dimensions Height mm 880 Width mm 940 Depth mm 340 Package dimensions Height mm 981 Width mm 1 016 Dept...

Page 6: ...control YES Compressor discharge temp control YES Operation cut off control in abnormal ambient temp Run capacitor F VAC Crankcase heater 25W 240V Fan Fan Motor Type Propeller Q ty Dia mm 1 460 Fan m...

Page 7: ......

Page 8: ...18 880 940 33 7 Wide tube service valve 9 52 3 8 Wide tube service valve 12 7 1 2 Narrow tube service valve 6 35 1 4 336 256 416 176 25 13 380 AIR DISCHARGE 25 13 465 Unit mm 25 25 10 405 13 13 660 1...

Page 9: ...n accumulator Receiver tank Indoor unit Insulation of Refrigerant Tubing Because capillary tubing is used in the outdoor unit both the wide and narrow tubes of this air conditioner become cold To prev...

Page 10: ...fan 2 Operating current performance chart RH 85 Indoor fan speed High fan 50 60Hz 220V 1 High pressure performance chart RH 85 Indoor fan speed High fan 50 60Hz 220V 50 60Hz 220V 50 60Hz 220V Operati...

Page 11: ...erformance chart RH 85 Indoor fan speed High fan 50 60Hz 220V 1 High pressure performance chart RH 85 Indoor fan speed High fan 50 60Hz 220V 50 60Hz 220V 50 60Hz 220V Operating current A Low pressure...

Page 12: ...fan 2 Operating current performance chart RH 85 Indoor fan speed High fan 50 60Hz 220V 1 High pressure performance chart RH 85 Indoor fan speed High fan 50 60Hz 220V 50 60Hz 220V 50 60Hz 220V Operati...

Page 13: ...erformance chart RH 85 Indoor fan speed High fan 50 60Hz 220V 50 60Hz 220V 50 60Hz 220V Low pressure MPa High pressure MPa Operating current A Indoor discharge air temperature C Indoor discharge air t...

Page 14: ...PE THERMISTOR ROOM B NARROW PIPE TH6 MECHANICAL VALVE MVA MVD BOARD IN WIRE DEFROST VALVE DEF CONTROL PCB M U L T I P L E I N D O O R U N I T S H E A T P U M P O U T D O O R U N I T F O R F O U R R O...

Page 15: ...above or below the outdoor unit and within a total tubing length L1 L2 L3 L4 from the outdoor unit as detailed in Table 1 and Fig 1 INDOOR UNIT 1 INDOOR UNIT 4 INDOOR UNIT 3 INDOOR UNIT 2 Tubing leng...

Page 16: ...oor unit Union 12 7 Flare 9 52 12 7 D 12 7 9 52 Optional parts STK 43TCA 94 124 types 94 124 types 94 124 types 18 type More than 17 m 2 Connecting indoor unit type 184 at D Length of tube more than 1...

Page 17: ...nd that will not magnify operating noise or vibration Fasten in place with the anchor bolts M10 provide a base using concrete or similar material and ensure proper drainage select a location where the...

Page 18: ...o maintain performance Install in a location where the dimensions indicated by are ensured and where 2 or more faces of the unit are unobstructed In principle the top direction should be unobstructed...

Page 19: ...it B Unit A Unit C Unit D Unit B Unit C Unit D A Terminal plate 16P Grounding line Power supply Single phase AC 220V 240V B Terminal plate 3P CAUTION Be sure to connect the power supply line to the ou...

Page 20: ...ure is less than 0 C Compressor 100 Hz operation 4 way valve ON Outdoor fan OFF Solenoid valve ON for hot gas bypass Indoor fan OFF Temperature of the outdoor heat exchanger is at or above the tempera...

Page 21: ...nt control The operating frequency upper limits shown in the figure below are established for frequency reduction and increase prohibit Example of operation for heating Example of operation during coo...

Page 22: ...ecrease Stop operation 58 54 60 Fan H Fan H Fan H Fan L Fan L Fan L Less than 35 Hz Above 35 Hz Above 5 C 5 C or below Outdoor air 5 C 19 Hz Frequency 8 6 Control at HEAT Start up If HEAT operation is...

Page 23: ...oximately 60 seconds will be required for the charge to dissipate However allow at least 30 minutes for the charge to dissipate if it is thought there might be trouble with the outdoor control circuit...

Page 24: ...ing D sensor narrow tubing Outdoor air temperature sensor Branch tubing A sensor wide tubing Branch tubing B sensor wide tubing Branch tubing C sensor wide tubing Branch tubing D sensor wide tubing CT...

Page 25: ...NOTE The dashed line for the defrost or clean defrost lamp indicates lamp illumination at clean defrost only The maximum length of defrost operation is 12 minutes Defrost can also be ended based on t...

Page 26: ...Compressor Compressor protective thermistor Outdoor fan motor 4 way valve Coil thermistor Electric expansion valve Branch tubing temperature sensor Breaker Refrigerant gas pressure Measure during a te...

Page 27: ...and If the fan rotates easily a Replace the running capacitor on the outdoor control circuit board b Check for an open circuit in the fan motor coil winding c Use the tester AC range to check whether...

Page 28: ...n the problem may not be refrigerant shortage The problem may be a blockage of the refrigerant circuit a Check that there is no internal leakage inside the 4 way valve At the low pressure side tubing...

Page 29: ...T h g i h e r a s e r u t a r e p m e t r o o d t u o d n a r o o d n i e h t f I y n a g n i p p o t s s e t a v i t c a f f o t u c k a e p t n e r r u c e h t y c n e u q e r f n i s e s a e r c n...

Page 30: ...t s o r f e D N O s n r u t n a f r o o d n I r o f e v l a v d i o n e l o s e h t s d n o c e s 0 1 r e t f A F F O s n r u t s s a p y b s a g t o h d e r a e p p a s i d s a h l e e f r i a d l o...

Page 31: ...h t s e t u n i m 3 r e t f A y l l a c i t a m o t u a g n i t a r e p o s i e c n a l a b e r u s s e r p a s e t u n i m 3 e s e h t g n i r u D t r a t s o t r o s s e r p m o c e h t g n i w o l...

Page 32: ...a m n o i t a r e p o A Y R D n e e w t e b s e g n a h c n a f r o o d n i e h T Low and LL very low over a 6 minute n o i t a r e p o n a f n o i t a u t c u l f f 1 s i s i h T e l c y c g 2 below...

Page 33: ...at its normal mixed composition state in liquid phase When refrigerant R410A is used the composition will differ depending on whether it is in gaseous or liquid phase and the basic performance of the...

Page 34: ...g R22 and R407C No addition of compressor oil for R410A No additional charge of compressor oil is permitted No use of refrigerant other than R410A Never use a refrigerant other than R410A If refrigera...

Page 35: ...ging cylinder Refrigerant recovery unit Vacuum pump with anti reverse flow 1 Solenoid valve installed type which prevents oil from flowing back into the unit when the power is off is recommended Vacuu...

Page 36: ...lve installed vacuum pump so that even if power is cut off in the middle of evacuation of air due to a power interruption the valve will prevent the pump oil from flowing back The equipment may be dam...

Page 37: ...6Kg using a capacity of a 10Kg cylinder the minimum necessary amount for the cylinder is 0 76 10 0 20 2 76Kg For the remaining refrigerant refer to the instructions of the refrigerant manufacturer If...

Page 38: ...refrigerant other than R410A Also do not use oxygen or any flammable gas 5 Evacuation Use a solenoid valve installed vacuum pump so that even if power is cut off in the middle of evacuation of air due...

Page 39: ...0 76Kg using a capacity of a 10Kg cylinder the minimum necessary amount for the cylinder is 0 76 10 0 20 2 76Kg For the remaining refrigerant refer to the instructions of the refrigerant manufacturer...

Page 40: ...nt R410A for existing units which use R22 This will cause the air conditioner to operate improperly and may result in a hazardous condition 10 8 2 Use of Existing Tubing If replacing an older unit tha...

Page 41: ...ES APPENDIX Be sure to operate the air conditioning system only when 2 or more indoor units have been installed If operated with only a single unit installed the returning fluid to the compressor may...

Page 42: ...Max Min Max 2 8 2 8 Heating 4 00 4 00 8 0 2 030 9 3 1 6 9 0 800 2 170 Cooling 2 80 2 80 5 6 1 710 8 1 1 1 6 7 540 1 870 2 8 3 6 Heating 4 00 4 80 8 8 2 090 9 4 1 7 9 0 820 2 170 Cooling 2 80 3 60 6 4...

Page 43: ...90 3 55 3 55 10 0 2 170 9 7 1 7 10 8 820 2 350 Cooling 2 50 3 25 3 25 9 0 1 940 8 8 1 2 10 5 620 2 380 3 6 3 6 3 6 Heating 3 33 3 33 3 33 10 0 2 170 9 7 1 7 10 8 820 2 350 Cooling 3 00 3 00 3 00 9 0...

Page 44: ...0 9 0 1 940 8 8 1 2 10 5 620 2 380 2 8 3 6 Heating 2 20 2 60 2 60 2 60 10 0 2 170 9 7 3 6 3 6 1 7 10 8 820 2 350 Cooling 1 80 2 40 2 40 2 40 9 0 1 940 8 8 1 2 10 5 620 2 380 2 8 2 8 Heating 2 00 2 00...

Page 45: ......

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