SERVICE MANUAL - Alarko Carrier

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(3) Check procedures Table 11-8-1 No. Procedure Check points Causes 1 Turn off the power supply breaker and remove the P.C. board assembly from electronic parts base. Remove the connecting cables from the terminal block. Check whether or not the fuse (F01) is blown. Impulse voltage was applied or the indoor fan motor short-circuited. 2 Remove the connector of the motor and turn on the power supply breaker. If OPERATION indicator flashes (once per second), it is not necessary to check steps (1 to 3) in the right next column. Check power supply voltage : 1. Between No. 1 and No. 3 of CN23 (AC 220–240V) 2. Between and of C03 (DC 310–340V) 3. Between of C10 and output side of IC08 (DC 15V) 4. Between 12V and GND 5. Between 5V and GND 1. The terminal block or the crossover cable is connected wrongly. 2. The capacitor (C01), line filter (L01), resistor (R05), or the diode (DB01) is defective. 3. IC01, IC08 and T01 are defective. 4. IC01, IC08 and T01 are defective. 5. IC01, IC08, IC07 and T01 are defective. 3 Press [START/STOP] button once to start the unit. (Do not set the mode to On-Timer operation.) Check power supply voltage : 1. Between CN21 and No. 1 of CN23 (DC 15–60V) IC03 and IC04 are defective. 4 Shorten the restart delay timer and start unit. Check whether or not all indicators (OPERATION, TIMER, FILTER, PURE) are lit for 3 seconds and they return to normal 3 seconds later. The indicators are defective or the housing assembly (CN13) is defective. 5 Press [START/STOP] button once to start the unit, • Shorten the restart delay timer. • Set the operation mode to COOL. • Set the fan speed level to AUTO. • Set the preset temperature much lower than the room temperature. (The unit (compressor) operates continuously in the above condition.) 1. Check whether or not the compressor operates. 2. Check whether or not the OP- ERATION indicator flashes. 1. The temperature of the indoor heat exchanger is extremely low. 2. The connection of the heat exchanger sensor is loose. (The connector is disconnected.) (CN01) 3. The heat exchanger sensor and the P.C. board are defective. (Refer to Table 11-3-1.) 4. The main P.C. board is defective. 6 If the above condition (No. 5) still continues, start the unit in the following condition. • Set the operation mode to HEAT. • Set the preset temperature much higher than room temperature. 1. Check whether or not the compressor operates. 2. Check whether or not the OP- ERATION indicator flashes. 1. The temperature of the indoor heat exchanger is extremely high. 2. The connection of the heat exchanger sensor short-circuited. (CN01) 3. The heat exchanger sensor and the P.C. board are defective. (Refer to Table 11-3-1.) 4. The main P.C. board is defective 7 Connect the motor connector to the motor and turn on the power supply. Start the unit the following condition. • Set the fan speed level to HIGH. (The unit (compressor) operates continuously in the above condition in No. 5.) 1. Check it is impossible to detect the voltage (DC 15V) between 3 and 4 of the motor terminals. 2. The motor does not operate or the fan motor does not rotate with high speed. (But it is possible to receive the signal from the remote controller.) 3. The motor rotates but vibrates strongly. 1. The indoor fan motor is defective. (Protected operation of P.C. board.) 2. The P.C. board is defective. 3. The connection of the motor connector is loose. – 102 –
11-8-2. P.C. Board Layout GND +12V +5V [1] Sensor characteristic table 100 Resistance value (kW) 90 TD : Discharge temp. sensor 80 TD TA : Room temp. sensor 70 TC : Heat exchanger temp. sensor 60 TO : Outdoor temp. sensor TE : Outdoor heat exchanger temp. sensor 50 TS : Suction temp. sensor 40 TGa : A room Gas side temp. sensor TGb : B room Gas side temp. sensor 30 TGc : C room Gas side temp. sensor TGd : D room Gas side temp. sensor 20 10 TA, TC, TO, TGa, TGb, TGc, TGd, TE, TS 0 0 10 20 30 40 50 Temperature (˚C) – 103 –
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FILE NO. A05-011-1 Revised on May/2
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1. SAFETY PRECAUTIONS Revised For g
Page 5 and 6:
2. SPECIFICATIONS The indoor and ou
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RAS-M10GKCVP-E, RAS-M13GKCVP-E, RAS
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Outdoor Unit : RAS-4M27GAV-E Power
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Page 13 and 14:
Page 15 and 16:
Outdoor Unit : RAS-4M27GACV-E Powe
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Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
2-2-1. Operation Characteristic Cur
Page 25 and 26:
Table 3-2-1 Thicknesses of annealed
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43˚ to 45˚ Table 3-2-6 Flare and
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3-4. Recharging of Refrigerant When
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2. Characteristics required for flu
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4-2. Outdoor Unit RAS-4M27GAV-E, RA
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5-2. Outdoor Unit RAS-4M27GAV-E, RA
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7. REFRIGERANT CYCLE DIAGRAM RAS-B1
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RAS-B10GKVP-E, RAS-B13GKVP-E, RAS-B
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Outdoor Unit : RAS-4M27GAV-E Tempe
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Outdoor Unit : RAS-3M26GAV-E Tempe
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8. CONTROL BLOCK DIAGRAM 8-1. Indoo
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8-2. Outdoor Unit (Inverter Assembl
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9-2. Operation Description 9-2. 1.
Page 51 and 52: Item Operation flow and applicable
Page 53 and 54: Item 2. Indoor fan motor control CO
Page 57 and 58: Item 6. Release protective control
Page 63 and 64: Item 14. Pulse motor valve (P.M.V.)
Page 65 and 66: Item 16. Clean operation release Op
Page 67 and 68: 9-3. Auto Restart Function This ind
Page 69 and 70: 9-5. Remote Controller and Its Fuct
Page 71 and 72: 9-6. Hi-POWER Mode ([Hi-POWER] butt
Page 73 and 74: 10-2. Optional Parts, Accessories a
Page 75 and 76: 10-3. Indoor Unit 10-3-1. Installat
Page 77 and 78: CAUTION • Be sure to refer to the
Page 79 and 80: CAUTION • Bind the auxiliary pipe
Page 81 and 82: 10-4-5. Refrigerant Piping Connecti
Page 83 and 84: 10-4-7. Evacuating After the piping
Page 85 and 86: 10-4-10. Miswiring (Mispiping) Chec
Page 87 and 88: 11. HOW TO DIAGNOSE THE TROUBLE The
Page 89 and 90: 11-3. Self-Diagnosis by Remote Cont
Page 91 and 92: Block distinction Check code Block
Page 93 and 94: (3) Only the indoor motor fan does
Page 95 and 96: (5) Troubleshooting for remote cont
Page 97 and 98: 11-5. Trouble Diagnosis by Outdoor
Page 99 and 100: 11-6-2. How to Check Whether the Mi
Page 101: Diagnosis/Process flowchart Item Co
Page 105 and 106: 11-8-5. Checking Method for Each Pa
Page 107 and 108: 12. HOW TO REPLACE THE MAIN PARTS W
Page 109 and 110: No. Part name Procedures Remarks 2
Page 115 and 116: 12-2. Microcomputer No. Part name P
Page 117 and 118: No. Part name Procedure Remarks 3 C
Page 119 and 120: No. Part name Procedure Remarks 7 P
Page 121 and 122: - 121 -
Page 123 and 124: 13. EXPLODED VIEWS AND PARTS LIST 1
Page 125 and 126: 13-2. Outdoor Unit 4 6 41, 42 35 23
Page 127 and 128: 13-3. P.C. Board Layout RAS-4M27GAV
Page 129 and 130: RAS-3M26GAV-E 707 710 715 700 705 T
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SERVICE MANUAL - Alarko Carrier

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