ElectrIQ eiQ-FC18K, Руководство пользователя и инструкция по установке, Страница: 34 / 39

34
DIAGNOSTIC AND MAINTANCE CODES
The digital led display in the indoor unit display number of units connected in the system while in
standby; also displays the frequency value during operation of compressor. During defrost on cold
days the LED light displays “dF”. There is a service codes check button on outdoor unit PCB,
pressing this button different times will check and display the following codes:
Codes Notes
Normal
display
Current frequency /
number of indoor units in
the system
Displays the operating inverter frequency and number of indoor units in the
system (for multisplit units)
1
Outdoor unit local capacity
for 18K/24K/36K outdoor unit, it shows 53/70/105, (5.3/7.1/10.5 Kw) for 48K
outdoor unit, it shows 5 (5HP)
2
Identify installed indoor
unit capacity
The following codes will be displayed 6=eiq-FC18K, 9=eiq-FC24K, 12= eiq-
FC36K,15= eiq-FC48K (to find the approx. 1,000s BTU value multiply by 3 or
divide by 3 for HP)
3
Variable DC inverter
current operating capacity
factor (adjusted from
outdoor unit requirements
T4)
eiq-FC18K = 5.3kw, eiq-FC24K= 7.1kw, eiq-FC36K= 10.5kw, eiq-FC48K=14kw.
The kw is converted approximatively to hp in the pcb logic as 5.3kw= 2HP,
7.1kw= 3HP, 10.5kw= 4HP, 14kw= 5HP. If for eiq-FC18K e.g. max capacity is
measured as 3xHP=6 (A) as in code (2). The variable DC inverter operating
capacity is calculated as per table below. So if T4 is
22
⁰
C than the variable
operating capacity is 80% of 6 rounded to integer 6x80%=4.8 the display will
show 5. For the same unit if T4 is 16
⁰C than the unit will display 3 (rounded up from
2.4).
4
Operation mode (0: Off /
fan only; 2: cooling; 3:
heating; 4: forced cooling);
0 Compressor OFF
2-4 Compressor ON
5
Variable DC inverter
current operating capacity
factor
(adjusted from
indoor unit requirements
T2B)
Similar to (3) but the adjustment
is also done according to the
indoor evaporator temperature
sensor T2B. So if for example in
(3) if outdoor temp T4 is 22
⁰ and T2B is decreasing from and T2B is decrease from
8°C to 6°C than the real output capacity needed is adjusted to 5-1=4
6
Fan status Different numbers means different fan speeds.