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10 Troubleshooting 

In general, possible trouble is classified in three kinds. One is called Starting Failure which is caused 

from  an  electrical  defect,  another  is  ineffective  Air  Conditioning  caused  by  a  defect  in  the  refrigeration 

circuit and improper application, and the other is called the Structure Damage. 

 

 

 

 

 

 

 

 

 

   

 

 

 

D

T

(

T

 

Problem 

What to check 

Unit does not start 

Make sure the dehumidifier s plug is pushed completely into the outlet. 

Check the house fuse/circuit breaker box. 

Dehumidifier has reached its pre-set level or bucket is full. 

Water bucket is not in the proper position 

Dehumidifier does not 

dry the air as it should 

Did not allow enough time to remove the moisture. 

Make sure there are no curtains, blinds or furniture blocking the front or back of 

the dehumidifier. 

The humidity control may not be set low enough. 

Check that all doors, windows and other openings are securely closed. 

Room temperature is too low, below 5

 (41

). 

There is a kerosene heater or something giving off water vapor in the room. 

The unit makes a loud 

noise when operating 

The air filter is clogged. 

The unit is tilted instead of upright as it should be. 

The floor surface is not level. 

Frost appears on the   

coils 

This is normal. The dehumidifier has Auto defrost feature. 

Water on floor 

Hose to connector or hose connection may be loose. 

Intend to use the bucket to collect water, but the back   

drain plug is removed. 

E1, E2, P1 or P2 appear 

in the display 

These are error codes. See the CONTROL PADS ON THE   

DEHUMIDIFIER section.   

Summary of Contents for Humifix 10

Page 1: ...Service Manual DEHUMIDIFIER DEHUMIDIFIER DEHUMIDIFIER DEHUMIDIFIERS S S S T T T T SERIES SERIES SERIES SERIES Humifix Humifix Humifix Humifix 10 10 10 10 Humifix Humifix Humifix Humifix 20 20 20 20 ...

Page 2: ...9 7 1 Terms and definitions 9 7 2 Electric part assembly condition that use 9 7 3 PCB working environment 9 7 4 Protection function 10 7 5 Set humidity operation 11 7 6 Continually dehumidify operation 11 8 Basic test procedure 11 8 1 Defective compressor 11 8 2 Sealed refrigeration system repairs 14 8 3 Fan motor 16 8 4 Capacitor 16 9 Characteristic of temperature sensor 18 10 Troubleshooting 19 ...

Page 3: ...fire or electric shock Install the panel and the cover of control box securely There is risk of fire of electric shock Always install a dedicated circuit and breaker Improper wiring or installation may cause fore or electric shock Use the correctly rated breaker of fuse There is risk of fire or electric shock Do not modify or extend the power cable There is risk of fire or electric shock Do not in...

Page 4: ...ce near the power cable There is risk of fire and electric shock Do not allow water to run into electric parts It may cause fire failure of the product or electric shock Do not store or use flammable gas or combustible near the product There is risk of fire or failure of product Do not use the product in a tightly closed space for a long time Oxygen deficiency could occur When flammable gas leaks ...

Page 5: ...igerant levels may cause failure of product Install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage Keep level even when installing the product To avoid vibration of water leakage Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause a problem for your neighbors Use two or more p...

Page 6: ...ct through air inlet or outlet while the product is operated There are sharp and moving parts that could cause personal injury Do not drink the water drained from the product It is not sanitary could cause serious health issues Use a firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury Replace the all batteries in the remote control with new ones of th...

Page 7: ...des P1 Unit is defrosting Allow the unit to automatically defrost The protective will clear after the unit self defrosts P2 Bucket is full or bucket is not in the right position Empty the bucket and replace in the right position NOTE When more than one errors occur the priority of the code display order is P2 E2 E1 P1 Humidity Set Control Pads The humidity level can be set within a range of 35 RH ...

Page 8: ...ctor to CONT position the dehumidifier will operate continuously for maximum dehumidification until the bucket is full To turn off the unit rotate the selector to the OFF position Defrosting indicator light This indicator light illuminates when frost builds up on the evaporator coils the compressor will cycle off and the fan will continue to run until the frost disappears Power on indicator light ...

Page 9: ... is a brief description of the important components and their function in what is called the refrigeration system Dimension Mode W mm H mm D mm T 10L 330 420 260 T 20L 380 480 300 LIQUID SIDE GAS SIDE EVAPORATOR CONDENSER COMPRESSOR CAPILIARY TUBE ...

Page 10: ...een Notes This symbol indicates the element is optional the actual shape shall prevail 202026290138 CN1 CN6 Humi CAP Blue 2 Optional FAN H Red C o m p F a n M M B lu e B la c k R e d C N 9 R Y 3 F a n _ H R e d B ro w n B la c k 4 3 B lu e W h ite P o w e r Y G G re e n 2 0 2 0 2 6 2 9 0 0 1 7 Y G C N 8 C N 7 D isp la y b o a rd C N 6 C N 2 C N 3 M a in b o a rd C N 1 0 W a te r s w itc h P ip e T...

Page 11: ...ng 7 Electronic function Only for Electric Models 7 1 Terms and definitions TC Temperature of evaporator Ha Humidity of indoor ambient HS The set humidity 7 2 Electric part assembly condition that use 1 Scope of application of voltage of the power 220 240VAC 50Hz 1phase 220 230VAC 60Hz 1phase 2 Working environment 5 C 35 C 3 The humidity of electric part working environment RH95 4 The electric sto...

Page 12: ...the top of water tank S1 a At running status if the water level of water exceeds the safety water level and the S1 closed the unit will protect by itself It will shut down all of load and back to work provided the water tank is empty by manual b At wake status if the water level of water exceeds the safety water level and the S1 closed the unit will protect by itself It will back to work provided ...

Page 13: ...ere is a water full protection or sensor fault protection The Setting humidity operation is unapplied 8 Basic test procedure 8 1 Defective compressor Compressors are single phase depending on the model unit All compressor motors are permanent split capacitor type using only a running capacitor across the start and run terminal All compressors are internally spring mounted and externally mounted on...

Page 14: ...a must and the other probe in turn to each compressor terminal If a reading is obtained the compressor is grounded and must be replaced 8 1 3 Checking the compressor efficiency The reason for compressor inefficiency is normally due to broken or damaged suction and or discharge valves reducing the ability of the compressor to pump refrigerant gas This condition can be checked as follows 1 Install a...

Page 15: ... overload 2 Allow time for overload to reset before attempting to test 3 Apply ohmmeter probes to terminals on overload wires There should be continuity through the overload 8 1 6 Terminal overload internal Some model compressors are equipped with an internal overload The overload is embedded in the motor windings to sense the winding temperature and or current draw The overload is connected in se...

Page 16: ...nto high side of the system 4 Accurately weighing the refrigerant charge actually introduced into the system 5 Facilities for flowing nitrogen through refrigeration tubing during all brazing processes 8 2 3 Hermetic compressor replacement The following procedure applies when replacing components in the sealed refrigeration circuit or repairing refrigerant leaks Include Compressor condenser evapora...

Page 17: ...of 10 11 Break vacuum by charging system from the high side with the correct amount of refrigerant specified This will prevent boiling the oil out of the crankcase NOTE If the entire charge will not enter the high side allow the remainder to enter the low side in small increments while operating the unit 12 Restart unit several times after allowing pressures to stabilize Pinch off process tubes cu...

Page 18: ... the discharge valve of the rotary compressor NOTE All inoperative compressors returned to Friedrich must have all lines properly plugged with the plugs from the replacement compressor 8 3 Fan motor A single phase permanent split capacitor motor is used to drive the evaporator blower and condenser fan A self resetting overload is located inside the motor to protect against high temperature and hig...

Page 19: ...ge such as bulges cracks or leaks 3 For dual rated apply an ohmmeter lead to common C terminal and the other probe to the compressor HERM terminal A satisfactory capacitor will cause a deflection on the pointer and then gradually move back to infinity 4 Reverse the leads of the probe and momentarily touch the capacitor terminals The deflection of the pointer should be two times that of the first c...

Page 20: ... 2 39 8239 25 10 52 3 1918 1 37 1988 26 9 5507 53 3 0707 0 35 2024 27 9 1245 54 2 959 1 33 3269 28 8 7198 55 2 8442 2 31 5635 29 8 3357 56 2 7382 3 29 9058 30 7 9708 57 2 6368 4 28 3459 31 7 6241 58 2 5397 5 26 8778 32 7 2946 59 2 4468 6 25 4954 33 6 9814 60 2 3577 7 24 1932 34 6 6835 61 2 2725 8 22 5662 35 6 4002 62 2 1907 9 21 8094 36 6 1306 63 2 1124 10 20 7184 37 5 8736 64 2 0373 11 19 6891 38...

Page 21: ... time to remove the moisture Make sure there are no curtains blinds or furniture blocking the front or back of the dehumidifier The humidity control may not be set low enough Check that all doors windows and other openings are securely closed Room temperature is too low below 5 41 There is a kerosene heater or something giving off water vapor in the room The unit makes a loud noise when operating ...

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