Mitsubishi Electric CITY MULTI PUHY-400YMF-C Service Handbook page 198

2
Constant capacity unit (SW4-2 ON)
No SW1 Item
12345678910
0 0000000000 Relay Output
Display 1 (blinking
display)
Check Display 1
OC Error
1 1000000000 Relay Output
Display 2
2 0100000000
3 1100000000
4 0010000000 Special Control
5 1010000000
6 0110000000
7 1110000000 Outdoor Unit (sub-
unit) Operation
Display
8 0001000000
9 1001000000
10 0101000000
11 1101000000
12 0011000000
13 1011000000
14 0111000000
15 1111000000
16 0000100000
17 1000100000 Outdoor Unit
Error Delay
18 0100100000
19 1100100000
20 0010100000
21 1010100000 Outdoor Unit
Preliminary Error
History
22 0110100000
23 1110100000
24 0001100000
LD1 LD2 LD3 LD4
COMP COMP 1 21S4a
Opera- Operat-
tion ing
(Address and error code reversed)
SV4 SV5b
3- Com-
minute pressor
restart operating
High — Low No. 1
pres- pres- dis-
sure sure charge
error 1, error tempera-
2 ture error
Over-
current
break
TH11 TH3
Error Error
TH8 TH9a
Error Error
High — Low No. 1
pres- pres- dis-
sure sure charge
error 1, error tempera-
2 ture error
Over-
current
break
TH11 TH3
Error Error
TH8 TH9a
Error Error
-195-
Display
LD5 LD6 LD7
SV2, 3
SV1
Only for
the
PUHN-
P-YMF-C
0000 ~ 9999
CH2, 3
Prelimi- Error Power off
nary LEV
Error open
No. 1
Over-
current
protec-
tion
TH10a TH10b
Error Error
TH4 TH5 TH6
Error Error Error
No. 1
Over-
current
protec-
tion
TH10a TH10b
Error Error
TH4 TH5 TH6
Error Error Error
Remarks
LD8
Lights for LD8 is a relay output
Normal indicator which lights
Operation up at all times when
the microcomputer's
power is ON. LD8 is
determined as the re-
verse of CH11.
Backup
No. 9
Power off
LEV
closed
The flag correspond-
ing to the item where
there is an error delay
lights up.
TH7
Error
Lights up if an error
delay has occurred
between the time the
power was turned on
and the present time.
To turn the indicators
off, switch the power
OFF briefly.
TH7
Error