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Maintenance

Si-93

Maintenance

2. Take out the heat exchange elements from the unit body.

VAM500

1000EJVE

VAM2000EJVE

3. Take out the air filter

4. To clean the air filter, lightly pat it with hand or remove dust with a vacuum cleaner. If excessively dirty,

wash it in water.

5. If the air filter is washed, remove water completely and allow to dry Air filter for 20 to 30 minutes in the

shade. When dried completely, install the air filter back in place.

(Direct the indication “INSIDE” of the air filter toward the heat exchange elerment.)

Heat Exchange Element (X2)

Handle

Rail

Filter

Heat Exchange Element (X4)

Handle

Rail

Filter

Содержание VAM 500EJ

Страница 1: ...Heat Recovery Ventilation Applied Models VAM 500EJ VAM 800EJ VAM1000EJ VAM2000EJ SiE 93 Service Manual...

Страница 2: ...Si 93 Table of Contents i Heat Recovery Ventilation VAM 500EJ VAM 800EJ VAM1000EJ VAM2000EJ VAM500 1000EJ VAM2000EJ...

Страница 3: ...s 25 1 Circuit Operations 27 1 1 Circuit Configuration 27 1 2 Circuit Functions 28 Part 6 Troubleshooting 29 1 Troubleshooting 31 1 1 Error Code Indication 31 1 2 Overall Alarm 32 1 3 Overall Malfunct...

Страница 4: ...7 1 18 Power Transformer 48 1 19 Damper Motor 49 Part 7 Supplementary Explanation 51 1 Supplementary Explanation 53 1 1 Field Setting Service Mode Operation 53 Part 8 Appendix 63 1 Appendix 65 1 1 Wir...

Страница 5: ...Si 93 iv Table of Contents...

Страница 6: ...Therefore be sure to observe all the safety caution items described below About the pictograms This symbol indicates an item for which caution must be exercised The pictogram shows the item to which...

Страница 7: ...Introduction Si 93 vi 1 1 1 Cautions in Repair Warning...

Страница 8: ...Si 93 Introduction vii...

Страница 9: ...e but may nevertheless be valuable to the reader such as tips and tricks Caution Caution A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loos...

Страница 10: ...Si 93 General Constructions 1 Part 1 General Constructions 1 General Constructions 3 1 1 Explanation 3...

Страница 11: ...Si 93 2 General Constructions...

Страница 12: ...er Long Life Filter 5 Damper 6 Switch Box 7 Maintenance Cover 8 Heat Exchange Elements 9 Name Plate 10 Air Supply Fan 11 Remote Controller Option Parts 12 Damper Motor 13 EA Exhaust Air Exhaust Air to...

Страница 13: ...Switch Box 7 Maintenance Cover 8 Heat Exchange Elements 9 Name Plate 10 Air Supply Fan 11 Remote Controller Option Parts 12 Damper Motor 13 EA Exhaust Air Exhaust Air to Outdoor 14 OA Outdoor Air Fres...

Страница 14: ...Si 93 Operations 5 Part 2 Operation 1 Operation 7 1 1 Explanation for Systems 7 1 2 Operation with The Remote Control for Air Conditioning Operation HRV Units BRC301B61 8...

Страница 15: ...Si 93 6 Operation...

Страница 16: ...VENTILATION mode The ON OFF and timer operation can not be performed using the HRV remote controllers The indication of centralized control appears on the display Other operations can be performed usi...

Страница 17: ...gh mode FRESH UP Low FRESH UP mode FRESH UP High FRESH UP mode Remote Controller for HRV BRC301B61 For Freshup operation When this indication does not show The volume of outdoor air supplied into the...

Страница 18: ...he office hours During this period the cooling or heating load is reduced to bring the room temperature to the set temperature in a short time 7 Indication of centralized control When a remote control...

Страница 19: ...ctor Remote Controller for VRV BRC1A61 62 Every time the operation mode selector is pressed the operation mode display changes as shown below example When the FILTER indication appears on the display...

Страница 20: ...Si 93 Maintenance 11 Part 3 Maintenance 1 Maintenance 13 1 1 Maintenance for The Air Filter 13 1 2 Maintenance for The Heat Exchange Element 16...

Страница 21: ...Si 93 12 Maintenance...

Страница 22: ...art Be sure to turn off the OPERATION switch and disconnect the power CLEANING FREQUENCY AT LEAST ONCE EVERY TWO YEARS FOR GENERAL OFFICE USE CLEAN THE ELEMENT MORE FREQUENTLY IF NECESSARY 1 Go into c...

Страница 23: ...a vacuum cleaner If excessively dirty wash it in water 5 If the air filter is washed remove water completely and allow to dry Air filter for 20 to 30 minutes in the shade When dried completely install...

Страница 24: ...not dry the air filter over a fire 3 Do not subject the air filter to direct sunlight 4 Do not use organic solvent such as gasoline and thinner on the air filter 5 Be sure to install the air filter af...

Страница 25: ...f the heat exchange element Use the vacuum cleaner equipped with a brush on the tip of the suction nozzle Lightly contact the brush on the surface of the heat exchanging element when cleaning Do not c...

Страница 26: ...Si 93 Control Functions 17 Part 4 Control Functions 1 Control Functions 19 1 1 List of Control Functions 19 1 2 Explanation of Individual Functions 20...

Страница 27: ...Si 93 18 Control Functions...

Страница 28: ...output based on temperature controller judgment Note 1 2 5 Pre cool pre heat function Prevents equipment operation for a preset time set time after air conditioner is turned on 2 6 Freshup function S...

Страница 29: ...Filter sign reset Stop Heat reclaim ventilation unit Ventilation fan motor Damper motor ventilation mode Normal ventilation Total heat exchange ventilation Remote controller indication Operation lamp...

Страница 30: ...150 min 3 Others a Heat reclaim ventilation unit must be in non operating condition for two consecutive hours or more prior to pre cool pre heat operation b Temperature control mode of the air condit...

Страница 31: ...oller for air conditioner Allows independent operation of heat reclaim ventilation unit from VRV system remote controller during interim periods not possible when direct duct connection is used ON OFF...

Страница 32: ...controller for air conditioner Details of setting Mode Setting mode Setting switch No Setting position Operation method 01 02 03 04 05 06 Group No setting for centralized controller individual Field s...

Страница 33: ...supply air exhaust air 7 Supply Air Exhaust Air External input terminal function selection 8 Fresh up Overall alarm Overall malfunction Forced Off Fanforced Off Air flow increase KRP50 output changeov...

Страница 34: ...Si 93 Circuit Operations 25 Part 5 Circuit Operations 1 Circuit Operations 27 1 1 Circuit Configuration 27 1 2 Circuit Functions 28...

Страница 35: ...Si 93 26 Circuit Operations...

Страница 36: ...motor relay Central data transmission interface circuit Remote control signal transmission interface circuit Relay drive circuit Microcomputer oscillation circuit Microcomputer reset circuit Control m...

Страница 37: ...ay coils Fan motor damper motor relay Power supply relay for fan motor and damper motor Input Thermistor interface Uses thermistor temperature sensor to detect inside and outside temperatures Airflow...

Страница 38: ...dicated LCD Remote Controller 38 1 9 Data Transmission Error Between LCD Remote Controller and Main Unit 39 1 10 Data Transmission Error LCD Remote Controller 40 1 11 Data Transmission Error Between L...

Страница 39: ...Si 93 30 Troubleshooting...

Страница 40: ...shing Overall alarm P32 Flashing Flashing Overall malfunction P33 6 6 6 64 4 4 4 ON OFF Flashing Inside air thermistor error P34 6 6 6 65 5 5 5 ON OFF Flashing Outside air thermistor error P35 6 6 6 6...

Страница 41: ...ting Conditions When external input terminal J1 JC is shorted during operation Overall Alarm must be set in field setting mode Possible Causes Faulty external device Broken wire Faulty control PCB Tro...

Страница 42: ...ting Conditions When external input terminal J1 JC is shorted during operation Overall Alarm must be set in field setting mode Possible Causes Faulty external device Broken wire Faulty control PCB Tro...

Страница 43: ...conversion table when measuring resistance Thermistor temperature resistance conversion table If measured value deviates significantly from above values thermistor is faulty Use tester to check resist...

Страница 44: ...conversion table when measuring resistance Thermistor temperature resistance conversion table If measured value deviates significantly from above values thermistor is faulty Use tester to check resist...

Страница 45: ...contact in connector including relay connector Faulty control PCB assembly Troubleshooting Note Note 1 Place tester probes on connectors of limit switch Move switch by hand and check continuity If tes...

Страница 46: ...er motor or limit switch Faulty indoor air thermistor Faulty outdoor air thermistor Frosting Broken wire in cable Faulty contact in connector including relay connector Faulty control PCB assembly Trou...

Страница 47: ...B assembly error Troubleshooting Dedicated Remote Controller Main Unit PCB Check to see if master slave remote controller is used Check microcomputer operation monitor on main unit PCB Is it flashing...

Страница 48: ...erminal board Check with power turned on With remote controller cable disconnected voltage between P1 and P2 on terminal board should be approx 16 VDC If measured value is not approx 16 VDC PCB assemb...

Страница 49: ...n is not performed correctly for a certain time period Possible Causes Erroneous connection Faulty remote controller setting Faulty remote controller Troubleshooting Is master slave selection switch p...

Страница 50: ...nditions When data transmission is not performed correctly for a certain time period Possible Causes Faulty remote controller setting Faulty remote controller Troubleshooting NO NO Is master slave sel...

Страница 51: ...ontroller cable Replace remote controller Is combination of remote controller and heat reclaim ventilation unit air conditioner correct NO HF011 Are 17 or more units connected to remote controller cab...

Страница 52: ...Remote controller microcomputer checks for double setting of addresses Error Generating Conditions When same address is set to two or more units Possible Causes Overlapping of central control address...

Страница 53: ...operly Is it flashing After checking other possible causes replace PCB assembly Is monitor indicator Off YES YES Monitor indicator remains On With remote controller disconnected check microcomputer op...

Страница 54: ...er check continuity between two wires in cable Is measured value M infinity NO YES With remote controller cable disconnected from main unit PCB check voltage between P1 and P2 on main unit terminal bo...

Страница 55: ...Option Check 2 Dedicated LCD remote controller Option Check 3 Dedicated LCD remote controller Option JC J2 J1 F2 F1 P2 P1 HL034 Main unit PCB JC J2 J1 F2 F1 P2 P1 HL035 Main unit PCB JC J2 J1 F2 F1 P2...

Страница 56: ...hermistor is faulty Use tester to check resistance NO YES Is resistance as shown below Thermistor is normal Remove thermistor from main unit PCB X12A X13A and check resistance using tester If measured...

Страница 57: ...sistance between secondary side of transformer and case 100 M or higher Insulation resistance between primary side and secondary side of transformer 100 M or higher Check resistance of primary side of...

Страница 58: ...resistance and voltage DAMPER MOTOR NO YES YES Is measured value 0 when limit switch turns on and infinity when it turns off Damper motor is normal Place tester probes at connectors of limit switch an...

Страница 59: ...Troubleshooting Si 93 50 Troubleshooting...

Страница 60: ...Si 93 Supplementary Explanation 51 Part 7 Supplementary Explanation 1 Supplementary Explanation 53 1 1 Field Setting Service Mode Operation 53...

Страница 61: ...Si 93 52 Supplementary Explanation...

Страница 62: ...tep 1 With equipment in normal mode press the button for more than 4 seconds to enter field setting mode Step 2 Mode No UP Mode No DOWN Use MODE and AIR VOLUME to select desired mode No Step 3 To sett...

Страница 63: ...ng mode Mode No Group No 3 4 1 5 HL040 2 Step 1 With equipment in normal mode press the button for more than 4 seconds to enter field setting mode Step 2 Mode No UP Mode No DOWN Use MODE and AIR VOLUM...

Страница 64: ...on the forced fan Mode No 43 Step 1 With equipment in field setting mode press the button for more than 4 seconds to enter service mode Step 2 Mode No UP Mode No DOWN Use MODE and AIR VOLUME to selec...

Страница 65: ...mode Mode No Step 1 With equipment in field setting mode press the button for more than 4 seconds to enter service mode Step 2 Mode No UP Mode No DOWN Use MODE and AIR VOLUME to select mode No 45 Ste...

Страница 66: ...pe andcooling heating selection privilege Note Note 1 Only master remote controller can display flashing Operation changeover control when cooling heating selection privilege is not set New heat recla...

Страница 67: ...y 40 Sensor data 41 Forced fan ON 43 Individual setting 44 Unit No reallocation 45 Step 1 To field setting mode Press for more than 4 sec Step 2 Mode No selection 1 Mode 00 30 Mode 40 49 Mode 50 59 Pr...

Страница 68: ...LCD LCD is equipped with a new function that graphically displays currently selected ventilation mode as shown below HL045 Ventilation mode Auto Total heat exchange ventilation mode Normal ventilatio...

Страница 69: ...Freshup setting changes as follows Inspection Inspection operation is shown below With Freshup Low Low High High Low Freshup High Freshup Without Freshup Function modes change in sequence every time...

Страница 70: ...ame group control system However the setting of selected units can be fixed by the following method Example This setting method can be used when a group control system is connected with units having a...

Страница 71: ...2 Supplementary Explanation Individual Settings Heat Reclaim Ventilation Unit Air Conditioner Ventilation Volume Ventilation Mode Airflow Volume Airflow Direction As indicated by LCD As indicated by L...

Страница 72: ...Si 93 Appendix 63 Part 8 Appendix 1 Appendix 65 1 1 Wiring Diagram 65...

Страница 73: ...Si 93 64 Appendix...

Страница 74: ...Si 93 Appendix Appendix 65 1 Appendix 1 1 Wiring Diagram VAM500EJVE VAM800EJVE VAM1000EJVE...

Страница 75: ...Appendix Si 93 66 Appendix VAM2000EJVE...

Страница 76: ...LCD Master Remote Controller and Slave Remote Controller 41 Data Transmission Error Between LCD Remote Controller and Main Unit 39 Data Transmission Error LCD Remote Controller 40 Dedicated LCD Remote...

Страница 77: ...eover Control 57 Operation chart 20 Operation for INDIVIDUAL SYSTEM 8 Operation mode selector 10 Operation with The Remote Control for Air Conditioning Operation HRV Units BRC301B61 8 Outdoor Air 3 4...

Страница 78: ...de indication ON OFF 24 Ventilation mode setting 24 Ventilation mode otal heat exchange 59 Ventilation Operation Control 20 Ventilation operation control function 19 Ventilation volume Freshup setting...

Страница 79: ...Si 93 iv Index...

Страница 80: ...TO OPERATE WITH TIMER 9 I Initial setting mode Nos 17 27 18 28 53 Inspection operation 60 L LCD and Operation Panel 59 M Main Unit PCB 38 Main unit PCB 44 Maintenance Cover VAM2000EJVE 13 VAM500 1000E...

Страница 81: ...Si 93 vi Drawings Flow Charts When no indication is displayed on remote controller 45 Wiring Diagram 65...

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