Johnson Controls YVAHP0721CW Series, Service Manual

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SM-16007
3-23
TROUBLESHOOTING
(C) Outdoor Unit Information
Select the outdoor unit number to be displayed only for the example of Unit A
(No.0).
Units B and C (Nos.1 and 2) show each unit number only.
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backward.
Select the outdoor unit number for indication.
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*1) The indicated current is reduced value. Use a clamp meter for the accurate current value.
*2) For resetting the accumulated operation time, press “PSW1 + PSW3” for 5 seconds
while the accumulated data is displayed.
Outdoor Unit Capacity
Outdoor Expansion Valve
MV1 Opening
Outdoor Expansion Valve
MVB Opening for Bypass
Expansion Valve Opening for Bypass
Indication (Unit: %)
1
Output State of Outdoor
Micro-Computer
Output State of Outdoor Micro-Computer Indication
Refer to “Location of Push Switches and
7-Segment Display”
2
Running Frequency of
Inverter Compressor MC1
4
3
Total Number of Running
Compressor Total Number of Running Compressor
Indication
6
5 Air Flow Rate
Details of Indication
Item Details
Unit Capacity Indication
Refer to “Outdoor Unit Capacity Table”
Air Flow Rate Indication (0 to 25 Steps)
Outdoor Expansion Valve MV1 Opening
Indication (Unit: %)
Running Frequency of INV. Compressor
Indication (Hz)
16
15
Evaporating Temperature
TE at Heating
Discharge Gas Temperature
on the Top of Compressor
MC1 (TD1)
Discharge Gas Temperature
on the Top of Compressor
MC2 (TD2)
14
13
Accumulated Operation Time of
Compressor MC1
Accumulated Operation Time of
Compressor MC1
Accumulated Operation Time of
Compressor MC2
Accumulated Operation Time of
Compressor MC2
Compressor MC1 Current
*1)
Compressor MC2 Current
*1)
Fan Motor (MOF1) Current
*1)
20
21
18
17
19
Inverter Fin Temperature
22
27
26
25
23
24
Discharge Pressure (High)
Suction Pressure (Low)
10
12
Ambient Air Temperature
(Ta)
7
8
11
9
Unit: Hour (Indication x 10 Hours)
Unit: Hour (Indication x 10 Hours)
Unit: Hour (Indication x 10 Hours)
Accumulated operation time can be reset.
*2)
Refer to “Inverter
Stoppage Cause Table”
Refer to “Fan Controller
Stoppage Cause Table”
Unit: Hour (Indication x 10 Hours)
Accumulated operation time can be reset.
*2)
Indication of Thermistor Open Circuit:
Indication of Thermistor Short Circuit:
Unit: Psi
Indication of Thermistor Open Circuit:
Indication of Thermistor Short Circuit:
Indication of Thermistor Open Circuit:
Indication of Thermistor Short Circuit:
Unit: Psi
Unit: o F
Indication of Thermistor Open Circuit:
Indication of Thermistor Short Circuit:
Unit: o F
Indication of Thermistor Open Circuit:
Indication of Thermistor Short Circuit:
Unit: o F
Indication of Thermistor Open Circuit:
Indication of Thermistor Short Circuit:
Unit:
o
F
Indication of Thermistor Open Circuit:
Indication of Thermistor Short Circuit:
Unit: o F
Unit: o F
Unit:
o
F
Unit: A
Unit: A
Unit: A
Indication of Thermistor Open Circuit:
Indication of Thermistor Short Circuit:
Unit: o F
Indication of Thermistor Open Circuit:
Indication of Thermistor Short Circuit:
Unit: o F
7-Segment
Display
SEG2 SEG1
*3)
Outdoor Heat Exchanger
Gas Temperature
Supercooling Temperature
Supercooling Temperature
at Bypass
Fan Controller Fin Temp.
Cause of Inverter Stoppage
Cause of Fan Controller
Stoppage
(Example)
Comp. No. O.U. No.
Fan Controller No.
O.U. No.
SEG2 SEG1
*3) The outdoor unit No. is indicated on the one digit of “SEG1”.
Indication Unit
Unit B (No.1)
Unit A (No.0)
Unit C (No.2)