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Service Section Technical Training December 2005

Service Section Technical Training December 2005. Ceiling Exposed E-series (CE-E/ER). Outlook. Nomenclature. Controller Specifications. Series. Brand. G : Wireless Handset S : SLM3 N : Netware III. E : E series. A : ACSON M : McQuay. Model Type. Refrigerant. R : Heatpump

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Service Section Technical Training December 2005

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  1. Service Section Technical Training December 2005

  2. Ceiling Exposed E-series (CE-E/ER)

  3. Outlook

  4. Nomenclature Controller Specifications Series Brand G : Wireless Handset S : SLM3 N : Netware III E : E series A : ACSON M : McQuay Model Type Refrigerant R : Heatpump Omitted if Cooling Only 5 : R410A Omitted if R22 Model - A C G I A CM 20 E R A 5 Other Specifications Electrical Model Name I : Ionizer Generator N : Non Thermal Plasma A : 220-240V/1Ph/50Hz CM : Ceiling Convertible Others Market Region Capacity A : First Issue C : Export with CE mark 20 : 20,000 Btu/h

  5. Contents 1. Features 2. Controller 3. Installation 4. Service

  6. 1. Features 1.1 Centrally located LED lights 1.2 Convertible 1.3 Optional drain pump 1.4 Optional fresh air intake

  7. 1. Features 1.1 Centrally located LED lights • LED located centrally at angle of 45° at front face : • Higher visibility of LED indicators • Better receivability of IR receiver

  8. 1. Features 1.2 Convertible • Under ceiling position

  9. 1. Features 1.2 Convertible • Floor standing position

  10. 1. Features 1.3 Optional drain pump • Located inside unit • 700 mm pump head • Built in float switch

  11. 1. Features 1.4 Optional fresh air intake • Fresh air intake knock out hole available

  12. 2. Controller PCB layout CE20/25/28E/ER

  13. 2. Controller PCB connection diagram SLM3 OR CN5 CN2 Netware2 LED Display Board IR Receiver

  14. 2. Controller 2.1 Features 2.1.1 Auto Random Restart 2.1.2 Power Up Settings 2.1.3 Unit ON / OFF 2.1.4 Sleep Function 2.1.5 Indoor Fan control 2.1.6 IONIZER Control 2.1.7 Non Thermal Plasma (NTP) 2.1.8 TURBO Function

  15. 2. Controller 2.1 Features 2.1.1 Auto Random Restart • Auto random restart at the last state memory setting • Shorted at JLST jumper at main board • Remove the jumper to have non-auto restart

  16. 2. Controller 2.1 Features 2.1.1 Auto Random Restart

  17. 2. Controller 2.1 Features 2.1.2 Power Up Settings Power Up JLST Shorted JLST Opened User Set Mode Mode = COOL User Set Temperature Set Temperature = 24˚C User Set Fan Speed Fan Speed = HIGH

  18. 2. Controller 2.1 Features 2.1.3 Unit ON/OFF • 3 ways to turn on / off the system: • (a) On/Off Triggering • Emergency On/Off Button • - System mode setting will rotate in the following • sequence • Heat pump …….>COOL>HEAT>OFF>….. • Cooling …….>COOL>OFF>……. • On/Off button on handsets

  19. 2. Controller 2.1 Features 2.1.3 Unit ON/OFF • (b) Delay timer • Pressing the On/Off will reset the timer to 0 hour • (c) Real time On/Off Timer • Based on internal real time clock • The timer settings are kept so that similar switches can occur 24 hours later. • If emergency ON/OFF switch being press, then the timer will be reset.

  20. 2. Controller 2.1 Features 2.1.4 Sleep Function • Only available for COOL, HEAT & AUTO mode • This function will increase (cooling mode) or decrease (Heating mode) the set temperature with time

  21. 01/212 Hours Ts + 2 Ts + 1 Ts + 1/2 Ts SLEEP set on SLEEP set off 2. Controller 2.1 Features 2.1.4 Sleep Function (Cool Mode)

  22. SLEEP set on SLEEP set off Ts Ts - 1 Ts - 2 Ts - 3 01/212 Hours 2. Controller 2.1 Features 2.1.4 Sleep Function (Heat Mode)

  23. 2. Controller 2.1 Features • Indoor fan speeds are LOW, MEDIUM, HIGH or AUTO FAN in COOL, HEAT and AUTO modes. • In FAN mode, only HIGH, MEDIUM and LOW speeds are allowed. 2.1.5 Indoor Fan Control

  24. 2. Controller 2.1 Features • The IONIZER can be turned ON when indoor fan is ON. • The IONIZER will OFF when indoor fan is OFF. 2.1.6 IONIZER Control Capacitor Ionizer

  25. 2. Controller 2.1 Features 2.1.7 Non Thermal Plasma (NTP) • What is NTP? - Generated by subjecting gas to an electrical field created by high alternating current. - When oxygen pass through the NTP, the molecules of oxygen break into oxygen ion – nascent oxygen.

  26. Oxygen Ion with high energy Oxygen Molecules NTP with high Voltage (AC ) 2. Controller 2.1 Features • General Arrangement: • The generated nascent oxygen oxidize the most organic air constituents into water and carbon dioxide. - eg. O* + CO CO2 2.1.7 Non Thermal Plasma (NTP)

  27. 20min 30min Set Temperature TURBO Function Conventional Time 2. Controller 2.1 Features • Available in COOL, HEAT and DRY modes only. • When TURBO function is set, indoor fan will force to HIGH for 20 minutes and working temperature for - Cooling Cycle is Ts – 2˚C - Heating Cycle is Ts + 2˚C 2.1.8 Turbo Function

  28. 2. Controller 2.1 Features 2.1.8 Turbo Function • If TURBO & Sleep function activated, Sleep function timer will reset until TURBO function is clear.

  29. 2. Controller 2.2 Operating Mode 2.2.1 Cool Mode 2.2.2 Heat Mode 2.2.3 Auto Fan 2.2.4 AUTO Mode 2.2.5 Defrost Function 2.2.6 Dry Mode

  30. 2. Controller 2.2 Operating Mode • Compressor will cut in if Tr – Ts > 0.5˚C • Compressor will cut out if Tr < Ts – 1.0˚C Note: Tr = Room Temperature Ts = Set Temperature 2.2.1 Cool Mode

  31. 2. Controller 2.2 Operating Mode • Compressor will cut in if Tr – Ts < 1.0˚C • Compressor will cut out if Tr –Ts > 3.5˚C Note: Tr = Room Temperature Ts = Set Temperature 2.2.2 Heat Mode 2.2.2.1 Heat Pump Model

  32. 2. Controller 2.2 Operating Mode • The indoor fan speed modulate according to the Tin coil: - If Tin coil > 40˚C, indoor fan run at user set speed - If Tin coil < 18˚C, indoor fan stop - If Tin coil crosses 30˚C, indoor fan change to low speed Note : Tin coil = Indoor Coil Temperature 2.2.2 Heat Mode 2.2.2.2 Hot Start

  33. 2. Controller 2.2 Operating Mode • When compressor cuts out, the indoor fan will run according to hot keep options. • There are 2 options of Hot Keep (selectable via jumper): (a) Fan On Option (b) Fan Off Option 2.2.2 Heat Mode 2.2.2.3 Hot Keep

  34. 2. Controller 2.2 Operating Mode (a) Fan On Option • Hot Start - If Tin coil > 40˚C, indoor fan run at set speed - If Tin coil crosses 37˚C, indoor fan run at low speed - If Tin coil < 30˚C, indoor fan stop • Thermostat Cycle Cut OFF - If Tin coil > 40˚C, indoor fan run at set speed - If Tin coil crosses 37˚C, indoor fan run at low speed - If Tin coil < 18˚C, indoor fan stop 2.2.2 Heat Mode 2.2.2.3 Hot Keep

  35. 2. Controller 2.2 Operating Mode (b) Fan Off Option • If Tin coil > 40˚C, indoor fan run at set speed • If Tin coil crosses 37˚C, indoor fan run at low speed • If Tin coil < 30˚C, indoor fan stop 2.2.2 Heat Mode 2.2.2.3 Hot Keep

  36. 2. Controller 2.2 Operating Mode • To run heat mode, 4-way valve MUST be turned ON. • 4-way valve can only be changed from ON to OFF or vice-versa 55 +/- 5 seconds after the compressor has cut out. • Compressor cut in after 4s. 2.2.2 Heat Mode 2.2.2.4 4-way Valve Changing

  37. AUTO Fan Speed during COOL mode Tr oC +1.5 +1.0 +0.5 Ts -0.5 -1.0 H M L M H M L L M H COMP ON COMP OFF COMP ON 2. Controller 2.2 Operating Mode • Cool Mode 2.2.3 Auto Fan

  38. AUTO Fan Speed during HEAT mode Tr oC +3.5 +3.0 +2.0 +1.0 Ts M H M L M H M L COMP OFF COMP OFF COMP ON 2. Controller 2.2 Operating Mode • Heat Mode 2.2.3 Auto Fan

  39. 2. Controller 2.2 Operating Mode Under AUTO mode, COOL & HEAT mode can be changed automatically depending on room & set temperature. 2.2.4 AUTO Mode (a) If the present AUTO mode is COOL, ( Mode Set Temperature = User Set Temperature) COOL HEAT IF • Tr <= Ts - 3.5°C AND • The compressor has cut out for at least 10 min.

  40. 2. Controller 2.2 Operating Mode 2.2.4 AUTO Mode (b) If the present AUTO mode is HEAT, ( Mode Set Temperature = User Set Temperature) HEAT COOL IF • Tr > Ts + 3°C AND • The compressor has cut out for at least 10 min.

  41. 2. Controller 2.2 Operating Mode 2.2.5 Defrost Mode • Can only be operate through HEAT mode • ‘Defrost Timer’ start counting when the OD coil sensor measured • below +3 oC • Upon crossing + 5 oC to a higher temperature for 150 seconds, • the timer will be reset (this timer is also reset after defrost mode) • The temperature sensing can only be done when the compressor • run time > 2 minutes

  42. To oC +3 +2 0 -2 -4 -6 -8 Hours 0 1/2 1 2 Defrost Mode if >3 min 2. Controller 2.2 Operating Mode 2.2.5 Defrost Mode The likelihood of ice frosting:

  43. 2. Controller 2.2 Operating Mode 2.2.5 Defrost Mode • During Defrost Cycle, HEAT LED will blink • The defrost cycle will terminate if: a. temperature of outdoor coil sensor exceeds +10 o C OR b. a minimum of 10 min compressor run time is achieved

  44. COMP ON OFF OD fan & 4WV ON OFF Defrost Cycle 15 +/- 5 sec 20 sec 2. Controller 2.2 Operating Mode 2.2.5 Defrost Mode Defrost Cycle

  45. 2. Controller 2.2 Operating Mode 2.2.6 Dry Mode During the 1st 12 minutes • Run under COOL mode with Auto Fan Speed for 12 minutes • OR • Run Until Tr < Ts – 1°C After the 1st 12 minutes • Run either Zone A, B, C or D (depend on temp. condition)

  46. 2. Controller 2.2 Operating Mode 2.2.6 Dry Mode ZONE A : if Tr - Ts > 2 o C ON Compressor OFF ON Low Fan OFF 12 Minutes

  47. 2. Controller 2.2 Operating Mode 2.2.6 Dry Mode ZONE B : if 0°C < Tr - Ts < 1°C ON Compressor OFF 4 min 8 min ON Low Fan OFF 30 sec 30 sec 12 Minutes

  48. 2. Controller 2.2 Operating Mode 2.2.6 Dry Mode ZONE C : if 1°C < Ts - Tr < 2°C ON Compressor OFF 6 min 6 min ON Low Fan OFF 12 Minutes 30 sec 30 sec

  49. 2. Controller 2.2 Operating Mode 2.2.6 Dry Mode ZONE D : if Ts - Tr > 3°C ON Low Fan OFF 30 sec ON Compressor OFF 12 Minutes

  50. 2. Controller 2.3 Protections 2.3.1 Compressor 2.3.2 Indoor Coil Anti Freeze 2.3.3 Outdoor Fan Speed Control 2.3.4 Self Diagnostics

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