–126–
PUHY-(P) 600·650·700·750 YSMF-B
YES
NO
Start Adjustment
Adjustment completed
Run all the indoor units in the
heating condition in the test
run mode.
Has the operating
condition stabilized?
AL1 = 0
And
AL2 = 0?
Has the operating
condition stabilized?
Has the operating
condition stabilized?
AL1 = 0
And
AL2 = 0?
AL1 = 0
AL1 = 1
AL1 = 2
And
AL2 = 2?
Charge with small amounts
of refrigerant at a time
through the variable
capacity unit's low pressure
service port.
After adjusting the
refrigerant volume,
run for 5 minutes
and judge the AL.
After adjusting the
refrigerant volume,
run for 5 minutes
and judge the AL.
After adjusting the
refrigerant volume,
run for 5 minutes
and judge the AL.
After adjusting the
refrigerant volume,
run for 5 minutes
and judge the AL.
After adjusting the
refrigerant volume,
run for 5 minutes
and judge the AL.
Did the liquid level
change from
AL = 0 to AL =1?
Finish charging with refrigerant.
Determine the difference between the volume of
refrigerant needed for heating and the volume
needed for cooling and charge with that amount.
Turn on self-diagnosis switches (SW1) No. 7 switching to the mode in
which the liquid level is displayed by the LED.
Readjust
Turn all SW1 switches OFF
Does AL1 =2 or
AL2 = 2?
Drain out approximately 5kg
of refrigerant from the AL=2
unit's low-pressure service port.
Does AL1 =2 or
AL2 = 2?
Drain out approximately 5kg
of refrigerant from the AL=2
unit's low-pressure service port.
Drain out approximately 5kg
of refrigerant from the AL=2
unit's low-pressure service port.
The indoor unit operation
capacity is set to middle
capacity.
The indoor unit operation
capacity is set to single-unit
operation.
Adjustment
unnecessary.
Note: 1
Note: 2
Note: 3
Note: 5
Note: 7
Note: 4
Note: 2
N
ote: 2
Note: 6
1
Go to
1
Go to
1
AL1:
V
a
riab
le capacity unit liquid le
v
el AL
AL2:
Constant capacity unit liquid le
v
el AL
*
Refr
iger
ant pooling on account of e
xtension-pipe length has a
consider
ab
le eff
ect when refr
igerant le
v
el adjustments are
perf
or
med dur
ing heating oper
ations
. Please rechec
k oper
ations
dur
ing the cooling season.
Summary of Contents for CITY MULTI PUHY-400YMF-B
Page 16: ... 13 FANCON board CNV CNW CNU CNFC2 ...
Page 17: ... 14 RELAY board CN51C2 CNOUT2 CNRT2 CN52F CN52C2 CNCH ...
Page 26: ... 23 ...
Page 50: ... 47 ...
Page 152: ... 149 Model PUHY 400YMF B 500YMF B ...