Panasonic CS-E10JD3EA / U-E10HBEA / CS-E15JD3EA / CU-E15HBEA / CS-E18JD3EA / CU-E18HBEA Service Manual ▷ View online
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13.3. Protection Control For Heating Operation
13.3.1.
Intake Air Temperature Control
Compressor will operate at maximum frequency if below conditions occur:
1. When the indoor intake air temperature is 30
°C or above.
13.3.2.
Outdoor Air Temperature Control
The maximum current value is regulated when the outdoor air temperature rises above 14
°C in order to avoid compressor
overloading.
13.3.3.
Overload Protection Control
The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below figures.
If the heat exchanger temperature exceeds 60
If the heat exchanger temperature exceeds 60
°C, compressor will stop.
13.3.4.
Cold Draught Operation
When indoor pipe temperature is low, cold draught operation start where indoor fan speed will be reduced.
13.3.5.
Deice Operation
When outdoor pipe temperature and outdoor temperature is low, deice operation start where indoor fan motor and outdoor fan
motor stop and operation LED blinks.
motor stop and operation LED blinks.
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14 Servicing Mode
14.1. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)
• The Test Run operation will be activated by short-circuiting CN-S at outdoor unit PCB after applying power between the terminal
1 and 2. The unit forced to run rated frequency cooling operation mode.
14.1.1.
CU-E15HBEA CU-E18HBEA
55
14.1.2.
CU-E10HBEA
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15 Troubleshooting Guide
15.1. Refrigeration Cycle System
In order to diagnose malfunctions, make sure that there are no
electrical problems before inspecting the refrigeration cycle.
Such problems include insufficient insulation, problem with the
power source, malfunction of a compressor and a fan.
The normal outlet air temperature and pressure of the
refrigeration cycle depends on various conditions, the standard
values for them are shown in the table on the right.
electrical problems before inspecting the refrigeration cycle.
Such problems include insufficient insulation, problem with the
power source, malfunction of a compressor and a fan.
The normal outlet air temperature and pressure of the
refrigeration cycle depends on various conditions, the standard
values for them are shown in the table on the right.
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