Hitachi RASC UTOPIA RCI-2.0FSN1E Installations- Und Betriebshandbuch Seite 47

TROUBLESHOOTING
Problem
No Restarting of
Outdoor Fan Motor
and Compressor
after Stoppage
for Cooling
Operation (Lamp
of "RUN" Switch
and Indicator is
Flickered)
Insufficient Cooling
(Lamp of "RUN"
Switch activates)
Insufficient Heating
(Lamp of "RUN"
Switch Activates)
(Only for Heat-
Pump Models)
Downloaded from www.Manualslib.com
Causes
• Obstacle to Air Intake of Air Discharge
for Outdoor Unit
• Insufficient Air Intake or Air Discharge
Space for Outdoor Unit
• Short Circuited Air Discharge for
Outdoor Unit
• Tripped High Pressure
• Faulty Outdoor Fan Motor
Switch
• Overcharged Refrigerant
• Clogged Capillary Tube
• Excessively High Ambient
Temperature
• Temperature of High Air Inlet
• Temperature for Indoor Unit
• Excessively High Discharge or Suction
Pressure
• High or Low Voltage
• Tripped Overcurrent
• Faulty Compressor Motor (After
relay for Compressor
Checked Electrical Resistance)
Motor
• Faulty Overcurrent Relay
• Faulty Starting Relay
• Frequent start/stop compressor
• Excessive Cooling Load
• Insufficiently Charged Refrigerant Gas
• Refrigerant Gas Leakage
• Clogged Strainer
• Clogged Suction Piping
• Too Low Pressure
• Clogged Air Filter
• Obstacle to Air Intake or Air Discharge
for Indoor Unit
• Faulty Indoor Fan Motor
• Short Circuited Air Discharge for
Indoor Unit
• Excessively High • Same as Tripped Air Discharge for
Pressure Indoor Unit
• Clogged Strainer
• Clogged Suction Piping
• Obstacle to Air Intake or Air Discharge
for Outdoor Unit
• Too Low Pressure
• Faulty Outdoor Fan Motor
• Short Circuited Air Discharge for
Outdoor Unit
• Faulty Thermistor(s) for Deicer
• Excessively High • Same as Tripped Air Discharge for
Pressure Indoor Unit
manuals search engine
Solution
• Remove the obstacle
• Keep the minimum Air Intake and Air Discharge Space
• Remove Any Obstacle
• Replace the Outdoor Fan Motor
• Charge Correct Refrigerant Gas
• Replace the Capillary Tube
• See Unit Working Range
• Reduce the Cooling Load
• Same as Tripped High Pressure Switch Remedy Action
• Obtain Correct Voltage
• Replace the Compressor
• Replace the Overcurrent Relay
• Replace the Starting Relay
• Replace the compressor
• Reduce the Cooling Load
• Charge Correct Refrigerant Gas
• Repair Leakage and Charge Correct Refrigerant Gas
• Repair or Replace the Strainer
• Remove the Obstacle
• Cleaning the Air Filter
• Take Away the Obstacle
• Replace the Indoor Fan Motor
• Take Away any Obstacle
• Same as Tripped High Pressure Switch Remedy Action
• Repair or Replace the Strainer
• Remove the Obstacle
• Take away the obstacle
• Replace the Outdoor Fan Motor
• Take Away any Obstacle
• Replace the Thermistor(s)
• Same as Tripped High Pressure Switch Remedy Action
PMGB0126A rev.2 - 11/2006
35