FEATURES
PART NAMES AND FUNCTIONS
SPECIFICATION
OUTLINES AND DIMENSIONS
3.In order to increase the strength of the flare nut, the size of some of them has been increased. 4.In order to increase the strength of the flare nut, the size of some of them has been increased.
WIRING DIAGRAM
Remove panel frame with thumb, and press protrusions with other fingers to remove hooks. If the control box (C) is lifted, the claws are released and the control box (C) can drop down. In order to lower the control box (C) completely, it is also necessary to use the following guide wire connectors. Remove the turbo fan mounting screw (one M8 nut) and pull the turbo fan off the fan motor shaft.
Remove the mounting nuts (four M5 nuts) securing the motor mounting leg to the main body and remove the fan motor together with the leg. It may fall, so when removing it, hold the fan motor firmly and remove the mounting screws. Remove the plug wire connectors that are connected to the blower motor (D) and remove the motor fasteners (E) (two for each motor).
Remove the fan motor shaft mounting screw (one for each fan), and remove the sirocco fan (F). Remove the service panel and filter following the procedure explained in section 8-1. Remove the decorative panel frame. Remove the beak using the procedure explained in section 8-3. 1) Remove the control box cover using the procedure explained in section 8-2. 2) Disconnect the following lead wire connections from the control box.
Photo 4-2) (1) Remove the two drain pan fixing plates B. 2) Remove the two drain pan fixing plates C. 3) Remove the side frame reinforcement plate. Remove the thermistor from the thermistor holder on the copper pipe (liquid pipes .. thin pipe, gas pipes .. thick pipes). Remove the thermistors (K and L) from the thermistor holders (I and J) installed on the steel pipes (liquid pipes ··· fine pipes, gas pipes ··· thick pipes).
Remove the service panel and filter using the procedure described in Section 8-1. Remove the control box cover with the procedure up to 3. 1) Remove the fixing screw (a) of the thermistor installation plate (A) and pull down the thermistor with the installation plate. Remove the service panel and filter using the procedure described in Section 8-1. Remove the decorative panel bezel using the procedure described in Section 8-4. Remove the bell mouth using the procedure described in Section 8-3. Remove the control box using the procedure described in Section 8-4. Remove the drain pan using the procedure described in Section 8-4. Remove the tie on the drain hose connected to the drain pump. Remove the service panel and filter using the procedure described in Section 8-1. Remove the control box using the procedure described in Section 8-2. Remove the decorative panel frame, drain pan and partition plate with the procedure up to 3~5 of 8-4. 1) Cut the drain hose fixing tie (C) which is connected to the drain pump (A).
Remove the service panel and filter using the procedure described in Section 8-1. Remove the decorative panel bezel using the procedure described in Section 8-4. Remove the bell mouth using the procedure described in Section 8-3. Remove the control box using the procedure described in Section 8-4. Remove the drain pan using the procedure described in Section 8-4. Remove the LEV drive motor with a double wrench. Remove the liquid pipe connection flange, the gas pipe connection flange, and then lower the unit housing to remove the heat exchanger. Remove the decorative panel frame, drain pan and divider with the procedure up to 3~5 of 8-4.
REFRIGERANT SYSTEM DIAGRAM
TROUBLE SHOOTING
Use a tester to measure the resistance between the two connectors. (Ambient temperature: 20˚C to 30˚C) Use the tester to measure the resistance between the two connectors. The linear expansion valve is opened/closed by a stepper motor after receiving a pulse signal from the internal control board. A pulse signal will be sent for 10 seconds as soon as the main switch is turned on.
To check the linear expansion valve, operate the indoor unit in fan mode and operate other indoor units in cooling mode at the same time, then check the pipe temperature
It is not necessary to replace the linear expansion valve if the leakage is small and does not cause any problems. The engine idles and makes ticking noises when the engine is operated while the linear expansion valve is locked. Measure the resistance between each coil (red-white, red-orange, brown-yellow, brown-blue) using a tester.
When the switch is on, a 2200 pulse closing valve signal will be sent until it goes to the A point to define the valve position. When the valve moves smoothly, there is no noise or vibration from the linear expansion valve: but when the pulse number moves from E to A, or when the valve is locked, more noise than usual can be heard. Noise can be detected by placing the ear against the screwdriver handle while applying the screwdriver to the linear expansion valve.
This is the key to be used when the indoor unit is used with the R2 series outdoor unit as a group. Since this switch is used by logging with SWC, refer to the SWC article for details. When attaching the optional high-performance filter elements (filter cassette) to the unit, be sure to attach it on the option side to prevent reduced airflow.
DISASSEMBLY PROCEDURE
