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Troubleshooting 

Troubleshooting Guide

 

When any malfunction of the air conditioner unit is noted, immediately switch off the supply to the 

unit. Check for  the following fault conditions and causes for some simple troubleshooting tips.

 

Fault

 

Possible Causes

 

The air conditioner unit 

does not operate.

 

Power failure, or the fuse blown and need to be replaced.

 

The power plug is disconnected.

 

If the fault persist after all these verifications, please 

contact the air  conditioner unit installer.

 

The air flow is too low.

 

The air filter is dirty.

 

The doors and windows are opened.

 

The air suction and discharge are clogged.

 

The regulated temperature is not high enough.

 

Discharge air flow has bad odor.

 

Odor may be caused by cigarettes, smoke particles, perfume 

etc. which might have adhered onto the coil.

 

Condensation on the front air 

grille of the indoor unit.

 

This is caused by air humidity after an extended long period of 
operation.

The set temperature is too low, increase the temperature 

setting and operate the unit at high fan speed.

 

Water flowing out from 

the air  conditioner unit.

 

Check the condensate evacuation.

 

If the fault persist, please call your local dealer / service personnel.

 

Summary of Contents for FCR1000B

Page 1: ...FAN COIL UNIT Models FCR200 1400E FCRQ400 800B FCRQ400 800C FCR200 1400B FFM800 3000B FKM500 1400A FWM300 800A Air Handling System FAS01 2020 21 ...

Page 2: ...menclature 2 Features 7 Engineering Specifications 8 Operating Range 16 Sound Data 17 Sound pressure level 17 Wiring Diagrams 25 Installation 28 Servicing and Maintenance 34 Troubleshooting 35 2020 FRIMEC INTERNATIONAL All rights reserved ...

Page 3: ...turn air plenum B Back return air plenum N No return air plenum S Standard drain pan E Extended drain pan H High static pressure for FFM only 3 30Pa external static pressure 6 60Pa external static pressure L Left piping R Right piping E Product generation 800 Unit Size FCR Ceiling Concealed FCU FFM High Air Volume FCU ...

Page 4: ...eturn air plenum N No return air plenum S Standard drain pan A Extended drain pan 200m E Extended drain pan 400m 3 30Pa external static pressure L Left piping facing supply air duct R Right piping facing supply air duct B Product generation AC Motor 400 Unit Size FCRQ Low Noise Ceiling Concealed FCU C Product generation DC Motor ...

Page 5: ... BF BF With return air plenum NN Without return air plenum S Standard drain pan E Extended drain pan H High external static pressure L Left piping facing supply air duct R Right piping facing supply air duct B Product generation 400 Unit Size FCR High Delta T Fan Coil Unit ...

Page 6: ...Page 5 Cassette Type Fan Coil Unit FKM 500 A A Product generation 500 Unit Size FKM Cassette FCU Wall Mounted Type Fan Coil Unit FWM 300 A A Product generation 300 Unit Size FWM Wall Mounted FCU ...

Page 7: ...o the product line up Simple Installation Unique design of the fan coil units allow easy on site modifications of water pipes configuration left or right Accessories are also available to ensure trouble free installation Easy Maintenance The fan coil units are equipped with high quality electrical motor with low noise bearing that do not require lubrication and thus minimum maintenance effort requ...

Page 8: ...Page 7 FCR E FCR B FCRQ B FCRQ C FFM FKM FWM ...

Page 9: ...ooling Capacity High W 1450 2080 2920 3535 4320 5660 6695 7480 9360 Medium W 1275 1750 2455 2900 3675 4695 5760 6280 7950 Low W 960 1415 1960 2190 2980 3790 4285 4635 5710 External Static Pressure High Pa 60 Low 30 Filter Type Washable Type Material Nylon Thickness 8mm Fan Type Centrifugal Forward Curved Blades Quantity 1 2 2 2 2 3 4 4 4 Material Galvanized Steel Drive Direct drive Motor Type Perm...

Page 10: ...Cooling Capacity High W 2970 3485 4455 5475 Medium W 2500 2860 3790 4540 Low W 1995 2160 3070 3665 External Static Pressure Pa 30 Filter Type Washable Type Material Nylon Thickness 8mm Fan Type Centrifugal Forward Curved Blades Quantity 2 2 2 3 Material Galvanized Steel Drive Direct drive Motor Type Permanent Split Capacitor with Thermal Overload Protection Insulation Class Class B Power Supply V ...

Page 11: ...385 5570 Sensible Cooling Capacity High W 2970 3485 4455 5475 Medium W 2500 2860 3790 4540 Low W 1995 2160 3070 3665 External Static Pressure Pa 30 Filter Type Washable Type Material Nylon Thickness 8mm Fan Type Centrifugal Forward Curved Blades Quantity 2 2 2 3 Material Galvanized Steel Drive Direct drive Motor Type Permanent Magnet DC Brushless Motor Insulation Class Class B Power Supply V Ph Hz...

Page 12: ...100 11000 12400 13300 Low W 1784 2532 3475 4722 5353 7072 9036 9593 10534 11450 Sensible Cooling Capacity High W 1450 2474 2908 3798 4675 5798 7205 8091 9796 10155 Medium W 1400 2300 2800 3700 4600 5700 7000 7800 9300 9800 Low W 1204 1708 2262 3036 3657 4925 6043 6525 7534 8070 External Static Pressure Pa 75 Filter Type Washable Type Material Nylon Thickness 8mm Fan Type Centrifugal Forward Curved...

Page 13: ...938 Total Cooling Capacity High ESP H 130 Pa W 8290 6640 5300 9870 7900 6310 12040 9630 7700 15930 12750 10200 Sensible Cooling Capacity W 6110 4890 3920 7390 5910 4730 8750 6990 5600 11870 9510 7610 External Static Pressure Pa 130 Filter Type Washable Type Material Nylon Thickness 8mm Fan Type Centrifugal Forward Curved Blades Quantity 1 1 1 2 Material Galvanized Steel Drive Direct drive Motor Ty...

Page 14: ... 1462 3235 2585 2071 Total Cooling Capacity High ESP H 130 Pa W 19110 15290 12220 24260 19390 15530 34410 27510 22010 Sensible Cooling Capacity High ESP H 130 Pa W 14280 11420 9140 17620 14090 11290 25000 19980 15990 External Static Pressure Pa 130 Filter Type Washable Type Material Nylon Thickness 8 mm Fan Type Centrifugal Forward Curved Blades Quantity 2 2 3 Material Galvanized Steel Drive Direc...

Page 15: ...00 Medium CMH 731 850 1360 2176 CFM 430 500 800 1280 Low CMH 595 714 1156 1836 CFM 350 420 680 1080 Total Cooling Capacity High W 4500 5700 8220 12900 Fan Type Centrifugal forward curved blades Fan Motor Type Low Noise 4 Speed Rated Power Input at ESP 0 Pa W 76 90 145 225 Cooling Coil Type Seamless copper tube mechanically bonded to aluminum hydrophilic Fin Pipe Connection mm in DN20 3 4 Female Th...

Page 16: ... The manufacturer reserves the rights to make changes to the above specification without prior notice Model FWM 300A 500A 600A 800A Air Volume CMH 510 850 1020 1275 CFM 300 500 600 750 Total Cooling Capacity W 2640 4250 5000 7000 Rated Power Input W 52 76 96 134 Cooling Coil Type Aluminium Hydrophilic Fins Piping Connection mm in DN15 1 2 Male Threaded Water Flow Rate l s 0 13 0 20 0 25 0 39 Water...

Page 17: ...erating Limits Maximum water side pressure 2 0MPa Minimum entering water temperature 5 C Maximum entering water temperature 80 C Minimum air inlet temperature 5 C Maximum air inlet temperature 43 C Power supply 220 240V 1Ph 50Hz ...

Page 18: ...dium 14 24 33 35 35 30 23 14 38 0 34 Low 12 17 25 27 35 24 15 12 30 9 26 600 High 22 33 41 42 35 38 30 22 46 4 43 Medium 17 27 35 36 35 33 25 17 40 2 36 Low 13 18 26 29 35 24 17 14 32 3 27 800 High 23 34 42 43 35 39 32 23 46 5 43 Medium 18 28 36 37 35 34 26 17 41 0 36 Low 13 19 28 29 35 25 18 13 32 6 27 1000 High 25 35 44 45 35 41 33 25 49 0 45 Medium 21 32 40 42 35 37 30 21 45 3 41 Low 14 22 30 3...

Page 19: ... 30 41 48 50 51 46 38 29 53 9 50 Medium 24 34 42 44 44 40 32 24 47 1 43 Low 18 28 36 39 39 34 27 18 42 3 38 1400 High 32 41 50 52 53 48 40 32 55 6 52 Medium 25 36 43 45 45 42 34 24 48 8 44 Low 18 29 36 38 39 35 27 19 42 2 38 1 Sound pressure level of FCUs are tested in accordance to GB T19232 2003 under 11 5 dBA background noise 2 Microphone position 1m in front and 1 m below the unit Model FCRQ B...

Page 20: ... 40 5 45 4 44 0 43 3 40 9 34 6 28 0 47 7 42 Medium 38 6 40 3 43 9 43 1 42 3 39 7 33 0 26 2 46 6 41 Low 36 4 37 0 39 9 40 0 38 5 35 2 27 5 19 8 42 7 37 400 High 39 4 43 4 46 7 47 5 45 1 41 9 33 7 25 8 49 5 44 Medium 39 2 43 0 45 9 46 1 44 4 41 5 32 7 24 4 48 7 43 Low 35 4 39 5 42 7 43 0 41 1 37 2 28 2 19 3 45 2 40 500 High 42 5 45 9 47 7 47 0 45 4 42 4 35 9 28 6 49 8 44 Medium 40 2 44 9 47 2 46 8 4...

Page 21: ...agram shows Left Piping Dimensions in mm Model A B C D E F G H I Motor No Fan No FCR200E 705 240 409 135 20 145 532 235 470 1 1 FCR300E 805 240 590 135 20 145 632 235 470 1 2 FCR400E 895 240 680 135 20 145 722 235 470 1 2 FCR500E 995 240 780 135 20 145 822 235 470 1 2 FCR600E 1105 240 890 135 20 145 932 235 470 1 2 FCR800E 1435 240 1185 135 60 88 1227 235 470 2 3 FCR1000E 1635 240 1380 135 20 145 ...

Page 22: ...1 1 2 FFM1800B 1260 1083 930 990 R1 R1 2 2 FFM2000B 1560 1403 1250 1310 R1 1 2 R1 2 2 FFM3000B 2010 1853 1700 1760 R1 1 2 R1 3 3 Dimension in mm Model A B C D E F G H I Motor No Fan No FCRQ400B C 905 250 690 135 54 118 732 245 490 1 2 FCRQ500B C 985 250 770 135 54 118 812 245 490 1 2 FCRQ600B C 1185 275 970 135 54 118 1012 270 515 1 2 FCRQ800B C 1465 275 1215 135 54 118 1257 270 515 2 3 Fan Motor ...

Page 23: ... 1 2 FCR500B 1060 878 848 881 951 553 145 256 155 226 1 2 FCR600B 1160 978 948 981 1051 553 145 256 155 226 1 2 FCR800B 1460 1228 1198 1231 1301 553 145 256 155 226 2 3 FCR900B 1560 1325 1298 1331 1401 553 145 256 155 226 2 3 FCR1000B 1660 1428 1398 1431 1501 553 145 256 155 226 2 4 FCR1200B 1460 1228 1198 1231 1301 609 197 300 205 282 2 3 FCR1400B 1660 1428 1398 1431 1501 609 197 300 205 282 2 3 ...

Page 24: ...Page 23 Model FKM 600 1000 Model FKM 1400 Model FKM 500 ...

Page 25: ...Page 24 Dimension in mm Model A B C FWM300A 850 300 198 FWM500A 970 315 235 FWM600A 970 315 235 FWM1100A 1100 330 235 Model FWM 300 1100A ...

Page 26: ...iagrams Model FCR E FCRQ B Model FCRQ C Field supply Field supply 1 M M Hi Me Lo 3 speed on off switch L 200 240V 1Ph 50Hz N E Red Blue Black Red Blue Black 2 3 L N E White Yellow Yellow Green White Yellow Yellow Green ...

Page 27: ...Field supply 3 speed on off switch 4 3 1 2 Red Blue Black Yellow Yellow Black Blue Red Hi Me Lo M M L N E 200 240V 1Ph 50Hz E Red Blue Black Yellow M Model FFM BH Model FCR B E L N E Hi Me Lo N FAN SPEED SWITCH ...

Page 28: ...finition of dial code switches 4 Water BK BU BU BU 2 1 N L Valve Neutral Line PE Limit Fuse Heater 7 DISPLAY Control Panel Float Switch RD BU BK YE Fan Capacitor ENV Sensor DA 12V GND PCB Room T Transformer Note Dotted line part in the frame may not be used M2 M1 transformer Receiver panel Indoor temp CN9 CN8 CN6 CN4 CN12 CN13 CN15 CN1 CN3 RD BU Y G AC__L AC__N CN16 TR__0 L R U D Wifi 5 7 CN2 FK 3...

Page 29: ...n of heat exchanger Both inlet and outlet pipes should be insulated connecting threads should be sealed using PTFE tape and sufficient gradient should be maintained for condensate water pipe for proper water drainage ii It is recommended to use union for connection of unit to the supply and return water pipes and to have isolation valves for each unit to ease servicing work upgrade of equipment in...

Page 30: ...d that the gradient of the pipe should not be less than 1 75 to facilitate the flow of drainage water Caution When connecting water pipes proper sized tools should be used to avoid damage of pipes or unit d Electrical connection i All electrical wiring must be performed by a qualified technician who is certified by the local authorities ii All electrical wires used for wiring must comply to the lo...

Page 31: ... keeps it horizontal using a levelling d Adjust the position to ensure the gaps between the body and the four sides of ceiling are even The body s lower part should sink into the ceiling for 10 12 mm Refer to Fig 1 e In general L is half of the screw length of the installation hook Refer to Fig 1 f Locate the air conditioner firmly by wrenching the nuts after having adjusted the body s position we...

Page 32: ...lied by the factory to mount the front panel Make sure there is no gap between the surface and the panel It may cause the condensate water or air leakage h Keep the panel ceiling at the same level and make sure meet the clearance ...

Page 33: ... c If the outlet of the drainpipe is higher than the body s pump joint the pipe should be arranged as vertically as possible The lift distance must be not more than 750mm to prevent water overflow when the unit is stop working 3 Installation Clearance To ease the maintenance and service works the unit must be installed in a location where sufficient space is reserved Please refer to the following ...

Page 34: ...essure test water must be drained out completely and anti freeze procedure must be adopted to prevent breakage of water pipes due to freezing When system is not operated during winter the water in the system must be drained out completely and anti freeze procedure must be adopted to prevent breakage of water pipes due to freezing 5 Pre Operation Inspection Before the unit is ready for operation th...

Page 35: ... to adopt control that allows flowing of cool water through heat exchanger with fan motor idle This will cause extensive condensation occur not only on heat exchanger but on the surface of casing due to very low air temperature in the unit If the control do not prevent chilled water flowing through heat exchanger during idling of fan motor it is recommended to close the water circuit through manua...

Page 36: ...aller The air flow is too low The air filter is dirty The doors and windows are opened The air suction and discharge are clogged The regulated temperature is not high enough Discharge air flow has bad odor Odor may be caused by cigarettes smoke particles perfume etc which might have adhered onto the coil Condensation on the front air grille of the indoor unit This is caused by air humidity after a...

Page 37: ... 2020 FRIMEC International www frimec international com A member of FRIMEC International Group ...

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