Sanyo C1852, CL1852, XS1852 - page 40

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11. SERVICE PROCEDURES

(2) A Sensor is Defective

11

11

1Indoor (heat exchanger) coil temp. Sensor is defective.

(a) Open (=No continuity in sensor)

Compressor and outdoor fan repeat ON for 10 minutes and OFF for 6 minutes

when sensor opens.

(b) Short

“Freeze Prevention” does not operate when dehumidified water is frozen on the

indoor coil.

22

22

2Room temp. Sensor (in the remote control unit) is defective.

(a) Open (=No continuity in sensor)

Neither outdoor fan nor compressor runs.

(b) Short

Outdoor fan and compressor do not stop. — Excessive cooling.

(3) Operation of Major Electrical Parts

Oudoor unit

Fan Compressor

Manual Thermo.ON VV VV V

Thermo.OFF VV V

Night Thermo.ON VV V VV V

setback Thermo.OFF VV V

Timaer ON Timer V

(set) OFF Timer VVV VV V

Freeze prevention VV V

VV

Sweep Cool VV*V*VV*V*

Fan VV

Stop Cool VV*V*VV*V*

Fan VV

NOTE V* Refer to Cooling Mode.

Indicator lamps

Cool

Room

Temp.

(Function)

Operation Mode Operation Indoor unit and Remote Control unit

Sweep

Fan

Night setback

Energy saver

Timer

Cool

-ing

Fan

Flap

Contents

Main Please Read Before Starting If Necessary, Get Help In Case of Improper Installation SPECIAL PRECAUTIONS Important CAUTION When Installing In an area with High Winds In a Snowy Area (for Heat Pump-type Sys-tems) Table of Contents Introduction: Read Me First! reference diagnostic HOW TO USE THIS MANUAL 1. OPERATING RANGE (1) Unit Specifications 7 (1) Unit Specifications 8 (2) Major Component Specifications (A) Indoor Unit 9 (2) Major Component Specifications (B) Outdoor Unit (3) Other Component Specifications (A) Indoor Unit (3) Other Component Specifications (B) Outdoor Unit 3. DIMENSIONAL DATA (1) Indoor Unit: XS1852 Dimension : inch Remote controller (Accessory) 3. DIMENSIONAL DATA (2) Outdoor Unit: C1852, CL1852 4. PERFORMANCE CHARTS (1) Operating Current Outdoor inlet air D.B. temp. F (C) Low pressure psig (kg/cm Outdoor inlet air D.B. temp. F (C) 5. AIR THROW DISTANCE CHART MODEL: XS1852 6. REFRIGERANT FLOW DIAGRAM Page Page NO Page Page 8. ELECTRICAL DATA (1) Indoor Unit 1XS1852 W 854-2-5268-872-00-0 (XS1852) Electric Wiring Diagram FMI Controller (CR-TS2432) 123G (1) Indoor Unit Schematic Diagram FMI Symbols Description (2) Outdoor Unit 1C1852 Electric Wiring Diagram (2) Outdoor Unit 1CL1852 CM FM Electric Wiring Diagram 27 Fig. 8 Chart Summary and Explanations Fig. 9 Fig. 10 Page Page 2) Air Conditioner does not Operate ++ Page C. Check Operation selector switch in the indoor unit. D. Transformer in indoor unit. E. Check. auxiliary relay. G. Check fuse on the P.C.B. Assy in the indoor unit. F. Check indoor fan motor thermal protector (49FMI) Disconnect the socket from 9P (WHT) connector. 3) Outdoor Unit does not Run. A. Check COOL / FAN selector switch in the remote control unit. B. Check set temperature. Page 5) Some Part does not Operate. A. Indoor fan does not run. 4) Indoor Unit does not Run. (Indoor fan and louver motor do not run.) B. Louver motor does not run. Check resistance of louver motor winding. P.C.B. Assy or remote control unit is defective. OK 6) Outdoor Fan does not Run. 7) Outdoor Fan does not Run for CL1852. 8) Compressor does not Run. 9) Poor Cooling 10) Excessive Cooling.