Daikin VAM 500EJ Service Manual
  1. Manuals
  2. Brands
  3. Daikin Manuals
  4. Heating System
  5. VAM 500EJ
  6. Service manual

Daikin VAM 500EJ Service Manual

Heat recovery ventilation
Hide thumbs
Table of Contents

Advertisement

Quick Links

SiE-93
Service
Manual
Heat Recovery Ventilation
[Applied Models]
VAM 500EJ
VAM 800EJ
VAM1000EJ
VAM2000EJ

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the VAM 500EJ and is the answer not in the manual?

Questions and answers

Related Manuals for Daikin VAM 500EJ

Summary of Contents for Daikin VAM 500EJ

  • Page 1 SiE-93 Service Manual Heat Recovery Ventilation [Applied Models] VAM 500EJ VAM 800EJ VAM1000EJ VAM2000EJ...
  • Page 2 Si-93 Heat Recovery Ventilation VAM 500EJ VAM 800EJ VAM1000EJ VAM2000EJ VAM500~1000EJ VAM2000EJ Table of Contents...

  • Page 3: Table Of Contents

    Si-93 1. Introduction .....................v 1.1 Safety Cautions ..................v Part 1 General Constructions ............1 1. General Constructions ................3 1.1 Explanation....................3 Part 2 Operation ................5 1. Operation ....................7 1.1 Explanation for Systems................7 1.2 Operation with The Remote Control for Air Conditioning Operation HRV Units. (BRC301B61) ...... 8 Part 3 Maintenance ..............11 1.
  • Page 4 Si-93 1.17 Thermistor ..................... 47 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 Wiring Diagram..................65 Index .....................i Drawings &...
  • Page 5 Si-93 Table of Contents...

  • Page 6: Introduction

    Si-93 Introduction 1. Introduction Safety Cautions I Be sure to read the following safety cautions before conducting repair work. Cautions and I The caution items are classified into “ Warnings Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “...
  • Page 7 Introduction Si-93 1.1.1 Cautions in Repair Warning...
  • Page 8 Si-93 Introduction...
  • Page 9 Introduction Si-93 1.1.2 Using Icons Icons are used to attract the attention of the reader to specific information. The meaning of each icon is described in the table below: 1.1.3 Using Icons List Icon Type of Description Information Note A “note” provides information that is not indispensable, but may nevertheless be valuable to the reader, such as tips and tricks.

  • Page 10: Part 1 General Constructions

    Si-93 Part 1 General Constructions 1. General Constructions ................3 1.1 Explanation....................3 General Constructions...
  • Page 11 Si-93 General Constructions...

  • Page 12: General Constructions

    Si-93 General Constructions 1. General Constructions Explanation VAM500EJVE / VAM800EJVE / VAM1000EJVE Metal Suspension Bracket Duct Connection Flange Exhaust Fan Air Filter (Long Life Filter) Damper Switch Box Maintenance Cover Heat Exchange Elements Name Plate Air Supply Fan Remote Controller (Option Parts) Damper Motor EA (Exhaust Air) [Exhaust Air to Outdoor] OA (Outdoor Air) [Fresh Air from Outdoor]...
  • Page 13 General Constructions Si-93 VAM2000EJVE Metal Suspension Bracket Duct Connection Flange Exhaust Fan Air Filter (Long Life Filter) Damper Switch Box Maintenance Cover Heat Exchange Elements Name Plate Air Supply Fan Remote Controller (Option Parts) Damper Motor EA (Exhaust Air) [Exhaust Air to Outdoor] OA (Outdoor Air) [Fresh Air from Outdoor] Maintenance Space for The Air Filters Heat RA (Return Air) [Exhaust Air from Room]...

  • Page 14: Part 2 Operation

    Si-93 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 Operations...
  • Page 15 Si-93 Operation...

  • Page 16: Operation

    Si-93 Operation 1. Operation Explanation for Systems This product is operated differently depending on the system configuration. For the operation of the remote controller for indoor unit and centralized controller, refer to the instruction manual provided with each unit. I Operation for Each System System Example Operation Method Independent...

  • Page 17: Operation With The Remote Control

    Operation Si-93 Operation with The Remote Control for Air Conditioning Operation HRV Units. (BRC301B61) For non-independent systems, starting/stopping operation and timer operation may not be possible. Use the air conditioner remote control or the Centralized controller in such cases. Operation for 1.
  • Page 18 Si-93 Operation 4. Ventilation mode changeover: button “ “ (Automatic) mode ..The temperature sensor of the unit automatically changes the ventilation of the unit in [Bypass] mode and [Heat Exchange] mode. “ (Heat Exchange) mode ..In this mode, the air passes through the heat exchange element “...
  • Page 19 Operation Si-93 Operating The HRV When the VRV-system air conditioner is connected with the HRV unit with a direct duct, the remote Unit Using The controller of the air conditioner cannot be used to select the VENTILATION mode. To use the HRV unit Remote Controller without operating the air conditioner, set the air conditioner in the FAN VENTILATION mode and select the of The VRV.

  • Page 20: Part 3 Maintenance

    Si-93 Part 3 Maintenance 1. Maintenance..................13 1.1 Maintenance for The Air Filter ............... 13 1.2 Maintenance for The Heat Exchange Element........16 Maintenance...
  • Page 21 Si-93 Maintenance...

  • Page 22: Maintenance

    Si-93 Maintenance 1. Maintenance Maintenance for The Air Filter Caution During operation, never check or clean the HRV. It may cause electrical shock and it is very dangerous to touch the rotating part. Be sure to turn off the OPERATION switch and disconnect the power. I CLEANING FREQUENCY AT LEAST ONCE EVERY TWO YEARS (FOR GENERAL OFFICE USE) (CLEAN THE ELEMENT MORE FREQUENTLY IF NECESSARY.)
  • Page 23 Maintenance Si-93 2. Take out the heat exchange elements from the unit body. VAM500 1000EJVE Heat Exchange Element (X2) Handle Rail Filter VAM2000EJVE Heat Exchange Element (X4) Handle Rail Filter 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.
  • Page 24 Si-93 Maintenance 6. Install the maintenance cover securely in place. Caution 1. Do not wash the air filter in hot water. 2. Do not dry the air filter over a fire. 3. Do not subject the air filter to direct sunlight. 4.

  • Page 25: Maintenance For The Heat Exchange Element

    Maintenance Si-93 Maintenance for The Heat Exchange Element I CLEANING FREQUENCY AT LEAST ONCE EVERY TWO YEARS (FOR GENERAL OFFICE USE) (CLEAN THE ELEMENT MORE FREQUENTLY IF NECESSARY.) 1. Use a vacuum cleaner to remove dust and foreign objects on the surface of the heat exchange element. I Use the vacuum cleaner equipped with a brush on the tip of the suction nozzle.

  • Page 26: Part 4 Control Functions

    Si-93 Part 4 Control Functions 1. Control Functions ..................19 1.1 List of Control Functions................ 19 1.2 Explanation of Individual Functions ............20 Control Functions...
  • Page 27 Si-93 Control Functions...

  • Page 28: Control Functions

    Si-93 Control Functions 1. Control Functions List of Control Functions Classification Function name Outline of function 1. Basic functions 1.1 Ventilation Controls supply air fan motor, exhaust air fan motor and damper (functions related to operation control motor. basic performance) function 1.2 Abnormality Detects abnormalities in thermistor, damper motor and data...

  • Page 29: Explanation Of Individual Functions

    Control Functions Si-93 Explanation of Individual Functions 1.2.1 Ventilation Operation Control Controls ventilation fan motors (supply and exhaust air fans) and damper motor. 1) Normal operation Operation chart Filter sign Cleaning Normal ventilation Operation reset time Stop mode selection Ventilation fan motor Damper motor Total heat (ventilation mode)
  • Page 30 Si-93 Control Functions 1.2.2 Pre-cool/Pre-heat Pre-cool/pre-heat operations require the following conditions. 1. System Pre-heat operation is possible only in air conditioner linked system (1 group, 2-group link). Check the system first. 2. Heat reclaim ventilation setting Set Preheat ON/OFF to ON. Pre-cool/pre-heat On/OFF setting can be made in air conditioner or using field setting mode of LCD remote controller of heat reclaim ventilation unit.
  • Page 31 Control Functions Si-93 1.2.3 Cold Area Mode Stops or lowers ventilation airflow during defrosting operation and compressor non-operating condition when equipment in heating mode, thus reducing heating load and cold air draft. Operation chart (in heating operation only) Normal ventilation Operation Defrosting operation mode selection...
  • Page 32 Si-93 Control Functions 2) Link control of 2 or more groups (zone link) I Heat reclaim ventilation unit can be operated when one or more air conditioners are operating. I Allows independent operation of heat reclaim ventilation unit from VRV-system remote controller during interim periods (direct duct connection is not allowed in this system).
  • Page 33 Control Functions Si-93 Details of setting Mode Setting Setting Setting position Operation mode switch method Ventilation mode Field 18(28) — — — — indication ON/OFF setting Refer to P-53 Freshup indication — — — — ON/OFF Freshup supply air/ Supply Air Exhaust —...

  • Page 34: Part 5 Circuit Operations

    Si-93 Part 5 Circuit Operations 1. Circuit Operations .................27 1.1 Circuit Configuration ................27 1.2 Circuit Functions..................28 Circuit Operations...
  • Page 35 Si-93 Circuit Operations...

  • Page 36: Circuit Operations

    Si-93 Circuit Operations 1. Circuit Operations Circuit Configuration Fan motor Damper motor PCB assembly Fan motor, Transformer damper motor relay Detection and cut-off of+16V current +16V Power supply Thermistor + 5V circuit Thermistor interface circuit To circuits and Relay drive microcomputer circuit Centralized control...

  • Page 37: Circuit Functions

    Circuit Operations Si-93 Circuit Functions Classification Circuit Function Input/output Central data transmission interface Used by centralized control equipment for operation control. Allows control of up to 64 groups of air conditioners and heat reclaim ventilation units. Use of KRP2A61 allows zone link operation.

  • Page 38: Part 6 Troubleshooting

    Si-93 Part 6 Troubleshooting 1. Troubleshooting ..................31 1.1 Error Code Indication................31 1.2 Overall Alarm..................32 1.3 Overall Malfunction................33 1.4 Indoor Air Thermistor Error..............34 1.5 Outdoor Air Thermistor Error ..............35 1.6 Damper System Error (Alarm) ............... 36 1.7 Damper System Error (Alarm) ...............
  • Page 39 Si-93 Troubleshooting...

  • Page 40: Troubleshooting

    Si-93 Troubleshooting 1. Troubleshooting Error Code Indication When an abnormality is generated, take necessary measures by referring to displayed error code. After the cause of abnormality is removed, operate equipment and check proper functioning. Indication of unit No. of abnormal Inspection indication Error code heat reclaim ventilation unit...

  • Page 41: Overall Alarm

    Troubleshooting Si-93 Overall Alarm 6 6 6 6 0 0 0 0 — Remote Controller Error Code Inspection Unit No. LCD Display LED Indication Remote Controller Main Unit Error Detection Abnormalities are detected based on open circuit in external input terminals (J1-JC). Method Error Generating When external input terminal (J1-JC) is shorted during operation...

  • Page 42: Overall Malfunction

    Si-93 Troubleshooting Overall Malfunction 6 6 6 6 0 0 0 0 Remote Controller Error Code Inspection Unit No. LCD Display LED Indication Remote Controller Main Unit Error Detection Errors are detected based on open circuit in external input terminals (J1-JC). Method Error Generating When external input terminal (J1-JC) is shorted during operation (“Overall Alarm”...

  • Page 43: Indoor Air Thermistor Error

    Troubleshooting Si-93 Indoor Air Thermistor Error 6 6 6 6 4 4 4 4 — Remote Controller Error Code Inspection Unit No. LCD Display LED Indication Remote Controller Main Unit Error Detection Temperature detected by inside air temperature sensor is used to detect errors. Method Error Generating When value detected by inside air temperature sensor is -40ºC or below (open circuit) or 70ºC or higher...

  • Page 44: Outdoor Air Thermistor Error

    Si-93 Troubleshooting Outdoor Air Thermistor Error 6 6 6 6 5 5 5 5 — Remote Controller Error Code Inspection Unit No. LCD Display LED Indication Remote Controller Main Unit Error Detection Temperature detected by outside air temperature sensor is used to detect errors. Method Error Generating When value detected by outside air temperature sensor is -40ºC or below (open circuit) or 70ºC or higher...

  • Page 45: Damper System Error (Alarm)

    Troubleshooting Si-93 Damper System Error (Alarm) 6 6 6 6 A A A A — Remote Controller Error Code Inspection Unit No. LCD Display LED Indication Remote Controller Main Unit Error Detection Measurement of damper motor limit ON/OFF time. Method I When damper motor limit switch 1 (or 2) remains ON (or OFF) for more than a certain time duration Error Generating Conditions...

  • Page 46: Damper System Error (Alarm)

    Si-93 Troubleshooting Damper System Error (Alarm) 6 6 6 6 A A A A Remote Controller Error Code Inspection Unit No. LCD Display LED Indication Remote Controller Main Unit Error Detection Measurement of damper motor limit switch ON/OFF time and temperatures detected by outdoor and indoor Method air thermistor.

  • Page 47: Dedicated Lcd Remote Controller

    Troubleshooting Si-93 Dedicated LCD Remote Controller 8 8 8 8 8 8 8 8 When “ ” remains on remote controller display. 8 8 8 8 8 8 8 8 Error Detection When “ ” remains on remote controller display. Method Error Generating Conditions...

  • Page 48: Data Transmission Error (Between Lcd Remote Controller And Main Unit)

    Si-93 Troubleshooting Data Transmission Error (Between LCD Remote Controller and Main Unit) U U U U 5 5 5 5 Remote Controller Error Code Inspection Unit No. LCD Display LED Indication Remote Controller Main Unit Error Detection Microcomputer checks if data is transmitted properly between main unit and remote controller. Method Error Generating When data transmission is not performed correctly for a certain time period.

  • Page 49: Data Transmission Error (Lcd Remote Controller)

    Troubleshooting Si-93 1.10 Data Transmission Error (LCD Remote Controller) U U U U 5 5 5 5 Remote Controller Error Code Inspection Unit No. LCD Display LED Indication Remote Controller Main Unit Error Detection Microcomputer checks if data is transmitted properly between main unit and remote controller. Method Error Generating When data transmission is not performed correctly for a certain time period.

  • Page 50: Data Transmission Error (Between Lcd Master Remote Controller And Slave Remote Controller)

    Si-93 Troubleshooting 1.11 Data Transmission Error (Between LCD Master Remote Controller and Slave Remote Controller) U U U U 8 8 8 8 Remote Controller Error Code Inspection Unit No. LCD Display LED Indication Remote Controller Main Unit Error Detection Microcomputer checks if data is transmitted properly between master-slave remote controller.

  • Page 51: Field Setting Error

    Troubleshooting Si-93 1.12 Field Setting Error U U U U A A A A Remote Controller Error Code Inspection Unit No. LCD Display LED Indication Remote Controller Main Unit Error Detection Method Error Generating Conditions I Faulty combination of remote controller Possible Causes I More than 16 units connected to remote controller cable.

  • Page 52: Overlapping Central Control Address

    Si-93 Troubleshooting 1.13 Overlapping Central Control Address U U U U C C C C Remote Controller Error Code Inspection Unit No. LCD Display LED Indication Remote Controller Main Unit Error Detection Remote controller microcomputer checks for double-setting of addresses. Method Error Generating When same address is set to two or more units.

  • Page 53: Main Unit Pcb Assembly

    Troubleshooting Si-93 1.14 Main Unit PCB Assembly Error Detection Check microcomputer operation monitor. Method Error Generating When main unit PCB assembly does not operate. Conditions When communication circuit errors. Possible Causes Fuse (excess current) Power transformer Noise Main unit PCB Troubleshooting Turn off power, then restart.

  • Page 54: Dedicated Lcd Remote Controller

    Si-93 Troubleshooting 1.15 Dedicated LCD Remote Controller When no indication is displayed on remote controller Error Detection Check to see if remote controller displays indication. Method Error Generating Conditions Possible Causes Troubleshooting Disconnect remote controller cable from both main unit terminal board and remote controller terminal board.

  • Page 55: How To Check

    Troubleshooting Si-93 1.16 How to Check Check 1 Dedicated LCD remote controller (Option) Main unit PCB (HL034) Check 2 Dedicated LCD remote controller (Option) Main unit PCB (HL035) Check 3 Dedicated LCD remote controller (Option) LCD remote controller Remote controller for heat reclaim ventilation Main unit PCB (HL036)

  • Page 56: Thermistor

    Si-93 Troubleshooting 1.17 Thermistor Error Detection Remove thermistor and check resistance with tester. Method Error Generating Conditions I Faulty thermistor Possible Causes I Broken wire I Faulty control PCB I Faulty contact in connector Troubleshooting Remove thermistor from main unit PCB (X12A, X13A), and check resistance using tester.

  • Page 57: Power Transformer

    Troubleshooting Si-93 1.18 Power Transformer Error Detection Check resistance and voltage with tester, and insulation resistance with megger. Method Error Generating Conditions Possible Causes Troubleshooting Check resistance of primary side of transformer. Does measured resistance deviate significantly Transformer is faulty. from values shown below?

  • Page 58: Damper Motor

    Si-93 Troubleshooting 1.19 Damper Motor Error Detection Check damper motor and limit switch when damper motor does not operate. Method Error Generating Conditions Possible Causes Troubleshooting Place tester probes at connectors of limit switch, and check continuity while moving switch by hand.
  • Page 59 Troubleshooting Si-93 Troubleshooting...

  • Page 60: Part 7 Supplementary Explanation

    Si-93 Part 7 Supplementary Explanation 1. Supplementary Explanation ..............53 1.1 Field Setting, Service Mode Operation..........53 Supplementary Explanation...
  • Page 61 Si-93 Supplementary Explanation...

  • Page 62: Supplementary Explanation

    Si-93 Supplementary Explanation 1. Supplementary Explanation Field Setting, Service Mode Operation 1.1.1 Field Setting Initial setting (mode Nos. 17, 27, 18, 28) Field setting mode Unit No. Setting position No. Setting switch No. Mode No. 1, 7 (HL039) Step 1 With equipment in normal mode, press the button for more than 4 seconds to enter field setting mode.
  • Page 63 Supplementary Explanation Si-93 Centralized control group No. setting Field setting mode (Mode No. 00) Setting of Individual No. (Mode No. 30) Group No. Mode No. 1, 5 (HL040) Step 1 With equipment in normal mode, press the button for more than 4 seconds to enter field setting mode.
  • Page 64 Si-93 Supplementary Explanation 1.1.2 Service Mode Operation Turn 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 select mode No.43.
  • Page 65 Supplementary Explanation Si-93 Unit No. reallocation (Mode Field setting mode No.45) Unit No. before reallocation Unit No. after reallocation Mode No. 1, 6 (HL042) Step 1 With equipment in field setting mode, press the button for more than 4 seconds to enter service mode.
  • Page 66 Si-93 Supplementary Explanation 1.1.3 Operation Changeover Control For group control of systems containing heat reclaim ventilation units and air conditioners (VRV system), remote controllers of air conditioners are connected with remote controllers of new heat reclaim ventilation units. In such system, both remote controllers display “Operation changeover control” according to the ON/ OFF of cooling/heating selection privilege.
  • Page 67 Supplementary Explanation Si-93 1.1.4 Field Setting The following shows the procedure for field setting using remote controller of new heat reclaim ventilation unit. (HL044) List of field setting mode Nos. Centralized control group No. setting General setting 10-29 Centralized control group No. setting (group) Error recode display Sensor data Forced fan ON...
  • Page 68 Si-93 Supplementary Explanation 1.1.5 LCD and Operation Panel (Reference Information) The following shows the operation panel and LCD of remote controller of new heat reclaim ventilation unit. (HL045) LCD is equipped with a new function that graphically displays currently selected ventilation mode, as shown below.
  • Page 69 Supplementary Explanation Si-93 1.1.6 Ventilation Volume (Freshup) Ventilation volume (Freshup) setting (With Freshup) (Without Freshup) changes as follows. High High Freshup Function modes change in sequence every time button is pressed. High Freshup (HL051) Inspection Inspection operation is shown below. Unit Cyclic (Normal screen)
  • Page 70 Si-93 Supplementary Explanation 1.1.7 Field Setting (Example of setting operation) Centralized control 1. Press for more than 4 seconds. group No. setting 2. Set mode No. to “00” using (mode No.: 00) 3. Set centralized control group No. using ] or 4.
  • Page 71 Supplementary Explanation Si-93 Individual Settings Heat Reclaim Ventilation Unit Air Conditioner Ventilation Volume Ventilation Mode Airflow Volume Airflow Direction As indicated by LCD As indicated by LCD High Swing Supplementary Explanation...

  • Page 72: Part 8 Appendix

    Si-93 Part 8 Appendix 1. Appendix ....................65 1.1 Wiring Diagram..................65 Appendix...
  • Page 73 Si-93 Appendix...

  • Page 74: Appendix

    Si-93 Appendix 1. Appendix Wiring Diagram VAM500EJVE / VAM800EJVE / VAM1000EJVE Appendix...
  • Page 75 Appendix Si-93 VAM2000EJVE Appendix...

  • Page 76: Index

    Si-93 Index Display OFF in automatic ventilation mode ... 59 Duct Connection Flange ........3, 4 Abnormality control function ........19 Air conditioner link function ........19 Air Conditioner Link Operation .......22 EEPROM ............... 28 Air conditioner link operation ........28 Error Code Air Filter (Long Life Filter) ........3, 4 60 ..............
  • Page 77 Si-93 General setting ............58 Operation with The Remote Control Group function ............19 for Air Conditioning Operation Group No. setting for centralized controller HRV Units. (BRC301B61) ........ 8 (individual) ............23 Outdoor Air ............3, 4 Outdoor Air Thermistor Error ......... 35 Overall Alarm ............
  • Page 78 Si-93 Ventilation mode changeover function ....19 Ventilation mode 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 changes ..60 When no indication is displayed on remote controller ........45 Index...
  • Page 79 Si-93 Index...

  • Page 80: Drawings & Flow Charts

    Si-93 Drawings & Flow Charts Air Conditioner Link Operation LCD and Operation Panel ........59 1 group link control ..........22 Link control of 2 or more groups ......23 Air flow rate can be changed over ......8 Main Unit PCB ............38 Main unit PCB ............
  • Page 81 Si-93 When no indication is displayed on remote controller ........45 Wiring Diagram ............65 Drawings & Flow Charts...

This manual is also suitable for:

Vam 800ejVam 1000ejVam 2000ej

Table of Contents