Hitachi UTOPIA RAS-4HVRP2E Service Manual page 299

10 Troubleshooting
Troubleshooting in check mode
Item
Input/output state of outdoor
micro-computer
Capacity of operating indoor unit
Control software number
Inverter software number
Inverter order frequency to
compressor
Air flow step
Outdoor unit expansion valve
opening
Temperature at the top of
compressor
Evaporating temperature at
heating
Ambient air temperature
Condenser Pipe Temperature
Control information
Inverter Firstly Current
Inverter secondary current
Indoor unit address
Indoor unit expansion valve
opening
Liquid pipe temperature of indoor
unit
(freeze protection)
Gas Pipe Temperature of Indoor
Unit
Indoor unit inlet air temperature
Indoor unit outlet air temperature
Cause of indoor unit stoppage
Total accumulated operation
time of
Compressor
Accumulated operation time
of compressor (can be reset
to zero for instance when
compressor is replaced)
Outdoor unit alarm code
Cause of stoppage at inverter
Cause of FAN stoppage
Abnormal data record
Total capacity of indoor unit
connected
Quantity of connected indoor
units
Refrigerant address
297 SMGB0136 rev.0 - 07/2021
Item
Check
Indic. Indic.
number
01
SC 3
02
oP 36
03
SP 12↔34.
04
iP 12↔34.
05
HI 74
06
Fo 15
07
Eo 30
10
d 94
11
E 34
12
o 44
13
C 22
14
F 20
15
A1 12
16
A2 20
17
nA 00
18
EA 20
19
LA 05
20
uA 26
21
iA 28
22
oA 20
23
dA 01
24
UJ 00↔00
25
cU 00↔00
26
AC 08
27
i 1
28
F 0
29
n1 00
30
CP 36
31
AA 2
32
GA 0
Indication data
Contents
Indicates only for the segments corresponding to the equipment in
the figure. (See figure above)
00~199
In case that capacity is higher than 100, the last two digits flash
Control Software No. in use is indicated. Alternately upper 2 digits
and lower 2 digits are indicated every 0.5 sec.
Inverter Software No. in use is indicated. Alternately upper 2 digits
and lower 2 digits are indicated every 0.5 sec.
0~115 ( Hz)
In case that frequency is higher than 100Hz, the last two digits flash.
00~15 step
00~100 (%)
In case that expansion valve opening is 100%, "
00~142 (ºC)
In case that temperature is higher than 100ºC, the last two digits
flash
-19~80ºC
-19~80ºC
-19~80ºC
Internal information of the PCB
00~199 (A)
In case that current is higher than 100ºC, the last two digits flash
00~199 (A)
In case that current is higher than 100ºC, the last two digits flash
00~63
00~100 (%)
In case that opening is 100%. " 00
-19~127 (ºC)
When Temp. is higher than 100, the last two digite flash.
-19~127 (ºC)
When Temp. is higher than 100, the last two digite flash.
-19~127 (ºC)
When Temp. is higher than 100, the last two digite flash.
-19~127 (ºC)
When Temp. is higher than 100, the last two digite flash.
00~99
Indicated Cause of Stoppage Code
0 to 9999 (x 10 hours)
Alternately upper 2 digits and lower 2 digits are indicated every 0.5
sec.
0 to 9999 (x 10 hours)
Alternately upper 2 digits and lower 2 digits are indicated every 0.5
sec.
00~99
Indicated Alarm Code
00~99
Indicated Cause of Stoppage Code
00~99
Indicated Cause of Stoppage Code
One of the abnormal data record from latest (n1) to oldest (n9) is
indicated. Alarm code or cause code is indicated.
00~199
In case that capacity is higher than 100, the last two digits flash
00~64
00~63
00 " flashes
" flashes
10