User manual CARRIER AEM009C7

[. . . ] Service manual Portable air conditioners 51AKA 006 51AKB 006G 51AKM 006G 51AKB 008G RTB 165G RTE 165G RTB 205C VTB 075C Contents page 1. ASSEMBLY DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PARTS DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4/5 2. 1 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] * If no voltage is found disconnect connector A on the power PCB, connect contact A3 of the power PCB to quick connector F2 and check if relay RL3 trips or not. 25 Call an electrician in case it is more than 15% less than the nominal voltage. Replace air sensor if necessary. Replace compressor thermal protector if necessary. Replace compressor if necessary. If relay does not trip it is necessary to replace the control PCB otherwise the power PCB. 10 Trouble TROUBLESHOOTING Mod. 51AKM 006, 51AKM 06G, RTE 165F, RTE 165G, VTE 075F, VTE 075G Action Check the start capacitor. Connect the fan motor directly to the supply. Remedy Replace start capacitor if necessary. Replace the motor in case it does not work; if motor works replace the control PCB. Call an electrician in case it is more than ±10% of the nominal voltage. Clean or straighten the fins. Unit does not work and both fan speed LEDs are blinking. Fan motor is continuously cycled on-off by its built-in overload protector. Check the supply voltage. Check if run capacitor is shorted or grounded. Ensure that the coils are clean and their fins are not damaged. Compressor motor is continuously cycled on-off by its built-in overload protector. Check supply voltage Check if air temperature is lower than maximum allowed one. (A low speed might cause discharge pressure increase). Ensure that the condenser coil is clean and its fins are not damaged. Call an electrician in case it is more than ±10 of the nominal voltage. If fan speed is too low at maximum speed it is necessary to replace the motor Clean or straighten the fins. Check compressor and condenser. Replace it if it does not work. Check if refrigeration circuit is partially or totally clogged. Replace the clogged parts and recharge the circuit. The cooling effect is not sufficient. Air filter is clogged. Ensure that the condenser and cooler coils are clean and their fins are not damaged. Compressor motor is continuously cycled on-off by its overload protector. Refrigerant charge is not sufficient. Clean or replace the air filter. Clean or straighten the fins. See previous trouble. Remove the charge, identify and repair any possible leaks and recharge the circuit. If speed is too low, lubricate with oil the bearing. If speed is still too low it is necessary to replace the motor. Replace the clogged parts and recharge the circuit. See separate section "Too much frost on cooler". Check compressor current and replace compressor if necessary. Check fan speed when motor is at maximum speed and supplied right voltage. [. . . ] Discharge the capacitor, shortcircuiting its terminal with the blade of a screwdriver. Take an Ohmmeter and select the x 100 scale. Then connect the sensors of the Ohmmeter to two terminals of the capacitor. a) If the capacitor is in order the needle will go immediately to zero and then will indicate high resistance. [. . . ]