Service manual
Table Of Contents
- Cover
- Table of Contents
- Packaged Air Conditioners Duct Connection Type (High static Pressure Application) FD-K Series — Cooling Only —
- Part 1 Model Name and Power Supply
- Part 2 Functions
- Part 3 Specifications
- Part 4 Remote Controller (Optional Accessories)
- Part 5 Field Piping and Wiring
- Part 6 Function and Operation
- Part 7 Troubleshooting
- 1. Maintenance Inspections
- 2. How to Handle Request for Maintenance
- 3. Troubleshooting Based on Equipment Condition
- 3.1 Troubleshooting Based on Equipment Condition
- 3.2 Equipment does not Operate
- 3.3 Fan Operates, but Compressor does not.
- 3.4 Cooling Operation Starts but Stops Immediately.
- 3.5 After Equipment Shuts Down, It cannot be Restarted for a While.
- 3.6 Equipment Operates but does not Provide Cooling.
- 3.7 Equipment Discharges White Mist
- 3.8 Equipment Produces Loud Noise or Shakes
- 3.9 Equipment Discharges Dust.
- Part 8 Removal Procedure
- Part 9 Appendix
- Packaged Air Conditioners Duct Connection Type (High static Pressure Application) FDY-K(A) Series — Heat Pump —
- Part 1 Model Name and Power Supply
- Part 2 Functions
- Part 3 Specifications
- Part 4 Remote Controller
- Part 5 Field Piping and Wiring
- Part 6 Field Setting
- Part 7 Function and Operation
- Part 8 Troubleshooting
- 1. Maintenance Inspections
- 2. How to Handle Request for Maintenance
- 3. Troubleshooting Based on Equipment Condition
- 3.1 Troubleshooting Based on Equipment Condition
- 3.2 Equipment does not Operate
- 3.3 Fan Operates, but Compressor does not.
- 3.4 Cooling/Heating Operation Starts but Stops Immediately.
- 3.5 After Equipment Shuts Down, It cannot be Restarted for a While.
- 3.6 Equipment Operates but does not Provide Cooling.
- 3.7 Equipment Operates but does not Provide Heating.
- 3.8 Equipment Discharges White Mist
- 3.9 Equipment Produces Loud Noise or Shakes
- 3.10 Equipment Discharges Dust.
- 3.11 Remote Controller LCD Displays "88".
- 4. Procedure of Self-Diagnosis by Remote Controller
- 5. Procedure of Self-Diagnosis by LED
- 6. Troubleshooting by Remote Controller Display / LED Display
- 6.1 Explanation for Symbols
- 6.2 Malfunction Code and LED Display Table
- 6.3 Failure of Indoor Unit PC Board
- 6.4 Malfunction of Heat Exchange Temperature Sensor System
- 6.5 Malfunction of Suction Air Temperature Sensor System
- 6.6 Malfunction of Remote Controller Air Thermistor
- 6.7 Actuation of Safety Device
- 6.8 Actuation of Safety Device
- 6.9 Failure of Outdoor Unit PC Board
- 6.10 High Pressure System (HPS) Malfunction
- 6.11 Low Pressure System (LPS) Malfunction
- 6.12 Malfunction of Electronic Expansion Valve
- 6.13 Discharge Pipe Temperature Malfunction
- 6.14 Malfunction of High Pressure Switch
- 6.15 Malfunction of Low Pressure Switch
- 6.16 Malfunction of Outdoor Temperature Sensor System
- 6.17 Malfunction of Discharge Pipe Temperature Sensor System
- 6.18 Malfunction of Heat Exchanger Temperature Sensor System
- 6.19 Short of Gas Malfunction
- 6.20 Reverse Phase
- 6.21 Malfunction of Transmission (Between Indoor and Outdoor Unit)
- 6.22 Malfunction of Transmission (Between Indoor Unit and Remote Controller)
- 6.23 Transmission Error Between Main Remote Controller and Sub Remote Controller
- 6.24 Failure of Field Setting Switch
- Part 9 Appendix
- Index
- Drawings & Flow Charts
Si42-107 Troubleshooting by Remote Controller Display / LED Display
Troubleshooting 239
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Find safety device which
is not energized.
Is
the safety
device's lead wire
correctlyconnected to the
outdoor unit PC
board?
YES
NO
Temperature of
compressor discharge
pipe is abnormally high.
Is the fan turning correctly?
Has draft passage been
provided?
Temperature of fan motor
coil is abnormally high.
Q1L
Q2L
Is power being properly
supplied?
(Voltage, lack of phase, etc.)
Is the compressor
malfunctioning?
Compressor current is
excessive.
F1C
*1
*2
*3
*4
Is the stop valve fully open?
Is the refrigerant piping
circuit clogged?
Is refrigerant charged to
the proper level?
Is the compressor
malfunctioning?
· · · ·
Connect correctly.
Open the stop vale.
Replace clogged part.
Charged to specified level.
Compressor replacement
Remove obstacles so the fan turns
correctly, or replace the fan.
Provide draft passage
Fan motor replacement
Provide suitable power supply.
Compressor replacement
(P1372)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.