MB 2.6A/AR Service Manual

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MB 2.6A/AR, 3.2A/AR

Service Manual

Table of Contents

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Summary of Contents for MB MB 2.6A/AR

Page 1 MB 2.6A/AR, 3.2A/AR Service Manual...
Page 2: Troubleshooting
Features Specification Dimensions Refrigeration cycle diagram Operation limits Wiring diagram Troubleshooting Electric control functions...
Page 3 1. Features 1.1 Compact design 1.2 Flexible wiring connection There is a separate terminal in indoor unit, so it is very easy and flexible to connect the indoor unit and outdoor unit. 1.3 Ultra strong rust proof performance, with special cataphoric treatment. 1.4 Optional panels available...
Page 4: Specification
2.Specification Model MB 2.6A/AR MB3.2 A/AR Power supply Ph-V-Hz 220-240V,50HZ 220-240V,50HZ Capacity Btu/h 9000 12000 Input 1300 Cooling Rated current Btu/w.h Capacity Btu/h 9500 13000 Input 1300 Heating Rated current Moisture Removal Max. input consumption 1250 1400 Starting current Model...
Page 5 3.Dimensions 3.1 Indoor unit MB2.6A/AR MB3.2A/AR...
Page 6 3.2 Outdoor unit MB2.3A/AR 3.3 Outdoor unit MB3.2A/AR...
Page 7: Cooling Only
4.Refrigeration cycle diagram 4.1 Cooling/heating Indoor unit outdoor unit Valve Sensor of room temp 4 way valve Heat exchanger Heat exchanger Compressor Sensor of heat exchanger temp Valve Capillary 4.2 Cooling only Indoor unit outdoor unit Valve Sensor of room temp Heat exchanger Heat exchanger Sensor of heat exchanger temp...
Page 8: Heating Operation
5.Operation limits 5.1Cooling operation Outdoor unit air temp. °C DB COOLING Indoor air temp. °C DB Note : The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage. 5.2 Heating operation Indoor air temp.
Page 9 6.Wiring diagram 6.1 Cooling only MB2.6A/AR MB3.2A/AR...
Page 10: Outdoor Unit
Outdoor unit I N DO O R U N I T O U TD O OR UN I T 1 2 ( N ) Y £ ¦ G B L A C K B L A C K O V E R L O A D R E L A Y R E D R E D...
Page 11 6.2 Heating/cooling MB2.6A/AR MB3.2A/AR...
Page 12 Outdoor unit...
Page 13 7.Troubleshooting(MB2.6-3.2A/AR) 7.1 For all cooling only model Failure phenomenon Operation lamp Timer lamp Indoor fan speed has been out of control for over 1 minute Indoor room temp. or evaporator sensor is open circuit or short circuit Over current protection of the compressor occurs 4 times EEROM error r Extinguish Flash at 5Hz...
Page 14 TE9: Evaporator high temperature protection, restoring temperature Systematic functions Remote receiving Testing and forced run Position set for indoor unit wind flap. LED displaying and alarm On or off Timer Protection for the compressor Current protection High temperature protection of indoor heat exchanger at heating mode Auto defrosting and heating recovery at heating mode Anti-cold air at heating mode Anti-frozen at heating mode...
Page 15: Dehumidifying Mode
8.4.7 Condition Indoor fan Compressor Outdoor fan Remark Current up I< I RESTORE <I< I Heating mode RESTORE Low speed Cooling mode <I<I After 5 Minutes 5MIN <I< I After 3 Seconds 5MIN 3SEC Current <I< I After 3 Seconds 5MIN 3SEC down...
Page 16: Heating Mode
Conditions Indoor Fan Compressor and Outdoor Fan ON 6 minutes TA ≥ TS+2 BREEZE OFF 4minutes ON 5minutes TS ≤TA TS+2 BREEZE OFF 5minutes ON 4minutes BREEZE OFF 6minutes Repeat on and off cycle. 8.7.3 Low room temperature protection:, When room temperature decreases to below 10°C , compressor and outdoor fan will stop(indoor fan is Breeze).
Page 17: Defrosting Operation (Available For Heating Only)
Indoor evaporator high-temperature protection Condition Compressor Outdoor fan T= Indoor exchanger temp. T<TE8 Indoor exchanger temp. up TE8<T<TE7 T>TE7 T>TE9 Indoor exchanger temp. down T<TE9 The louver opens to Standard Angle ANGLHEAT when power is on for the first time Defrosting operation (Available for heating only).
Page 18 8.9.2 Defrosting time If the temp. difference condition (1) is satisfied for less than 40 minutes, this can be regarded as severe frosting. The defrosting time is 10 minutes. If the temp. difference condition (2) is satisfied for more than 40 minutes, the defrosting time is 6 minutes.
Page 19 8.10 Automatic operation mode When running in automatic mode, the air conditioner automatically selects one of the following operation modes: cooling, heating or fan only according to the temp. difference between room temp. (TA) and set temp. (TS). TA—TS Operation mode TA—TS>2°C Cooling -1°C ≤TA—TS≤+2°C...
Page 20 8.16 Models and Parameters Model MB2.6A/AR MB3.2A/AR I3SEC 10.0A 11.0A I5MIN 7.5A 10.0A IFAN 5.5A 8.0A IRESTORE 4.5A 6.0A IDEFROST 4.5A 5.5A 28°C 28°C 32°C 32°C 30°C 30°C 20°C 20°C 2°C 2°C 7°C 7°C 60°C 60°C 53°C 53°C 50°C 50°C 200°...

This manual is also suitable for:

Mb3.2 a/ar