AY-X10CR
AE-X10CR
AY-X10CR-N
AE-X10CR-N
board
Solution
assembly.assembly or only TH2.moduleassembly.assembly.assembly
: Blinks 3 times at 0.2-second intervals1.Clear the discharge outlet. 2.Assure power supply voltage. 3.Refill to rated amount. 4.Replace the outdoor ther-mistor 5.Replace the indoor control 1. Replace power transistor 1.Replace the outdoor thermistor 1. Reattach. 2.Replace the outdoor thermistor 1.Replace the outdoor control board (Current transformer wire break.) 1. Clear the discharge outlet.1. Replace the power factor module.1. Reattach. 2. Reattach CN101 and CN102, otherwise replace power transistor module assembly or outdoor control board assembly.1. Reattach.2. Replace the heatsink thermistor.1. Replace the heatsink thermistor.2. Reattach CN3, otherwise replace the fan motor of outdoor unit.
3. Assure power supply voltage.
: ON
: OFF
What to check, procedure
: Blinks at 2-second intervals
outdoor unit (see Figure 3).the indoor unit (see Figure 1).outdoor unit (see Figure 3).unit control board?
1. Is the discharge outlet of the outdoor unit clogged ? 2. Is the power supply voltage at least 198 V at full power operation ? 3. Check for refrigerant leaks at the tubing connections. 4. Measure the resistance of compressor thermistor TH1 on the 5. Measure the resistance of heat exchanger pipe thermistor TH2 on 1. Check the circuit in the power transistor module. 2. Is the outdoor fan rotating ?1. Measure the resistance of thermistor TH2 on the outdoor unit (see Figure 3).1. Is the connector of the outdoor unit thermistors well attached ? (see Figure 3). 2. Measure the resistance of thermistors TH1 and TH2 on the 1. Can voltage be detected at the current transformer on the outdoor 1. Is the discharge outlet of the outdoor unit clogged ?1. CHeck wiring of power factor module.1. Has not if escaped from the compressor CN6 ? 2. Is the power supplied of 15V and 6V supplied to the IPM PWB.1. Are the connectors of the heatsink thermistor in outdoor unit well attached ? 2. Measure the resistance of thermistor TH6 on the heatsink. (See Figure 3).1. Measure the resistance of heatsink thermistor TH6 on the heatsink in outdoor unit. 2. Check rotation of the fan motor in outdoor unit.3. Is the power supply voltage at least 198V at full power operation ?
Normal
Diagnosis
Overheat of the comp- ressor error (protector operating) or outdoor compressor thermistor TH1 shortDC overcurrent errorShort circuit of the outdoor thermistor errorOpen circuit of the outdoor thermistor errorAC abnormal current errorAC overcurrent errorRotation errot of the compressorOpen circuit of the heatsink thermistor.Overheat of the power module or short circuit of the heatsink thermistor.
Twice3 times4 times5 times6 times7 times11 timesPower factor module error9 times14 times13 times
BREAK DOWN DIAGNOSIS PROCEDURE
Display by outdoor unit lamp LED 1
4 seconds off
Display by indoor unit operation lamp
Displayed in a pattern which comes on at the same time as the timer lamp
The error of outdoor unit
Normal
Condition of indoor and outdoor unit
Self-diagnostic procedure using display mode If the timer lamp blinks during operation, the problem can be diagnosed using the following table.
20 |
ACEC
