Led Status Codes - Johnson Controls DHPM09NWM42Q1 Installation Manual

TABLE 12: Error Codes
Indoor Character
Intelligent Power Module
P8
temperature is too high
Compressor current test
U1
circuit malfunction
Compressor protection
U2
against loss-of-phase
U3 Unstable DC voltage protection
U4 Compressor reverse protection
Entire unit current
U5
monitoring malfunction
U7 Reversing valve malfunction
Disconnection of the
U8
exhaust temperature sensor
U9 Outdoor unit zero cross detection error
OUTDOOR UNIT LED STAUS CODES
TABLE 13: Led Status Codes
NO Malfunction description
0 Normal stop
1 Compressorrun
2 Compressor overload protection
3 Discharge protection
4 Outdoor unit overload protection
5 High pressure protection
6 Over current protection
7 IMP protection
8 IMP over heating protection
9 PFC protection (including PFC overheating protection)
10 Phase current protection
11 Over voltage protection
12 Insufficient voltage protection
13 Start failure
14 Compressor desynchronizing
15 Compressor phase-lacking protection
16 Compressor phase current detection malfunction
17 Memory chip mistake
18 DC power supply circuit-short
Johnson Controls Unitary Products
Display
All system functions are terminated except
indoor fan.
All system functions are terminated except
indoor fan.
Unit will cycle off.
All system functions are terminated except
indoor fan.
Unit will cycle off.
All system functions are terminated except
indoor fan.
All system functions are terminated.
Unit will cycle off.
All system functions are terminated except
indoor fan.
System Status
LED1
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■
☆
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■
☆
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■
☆
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898150-UIM-B-0113
Troubleshooting for
Possible Causes
Intelligent Power Module high temperature
error can result from any of the following:
• Loss of cooling to the heat sink
• Low voltage
• High ambient temperature
• Loose screws fastening the outdoor con-
trol to the heat sink Check all and correct,
if necessary.
Replace outdoor control.
De-energize system and restart.
Input voltage is not stable.
De-energize system and restart.
Outdoor control has malfunction. Replace
control.
• Check input voltage on outdoor unit ter-
minal strip (N and L terminals). If lower
than 175 VAC, correct voltage problem.
• Check reversing valve wiring connection
for damage.
• If voltage and wiring connections are cor-
rect, replace reversing valve.
• Check for proper wiring connections and
loose wires at outdoor control (CT1, 2)
input plug
• Check for continuity across overload pro-
tection sensor terminals mounted at top of
compressor.
Replace outdoor control.
LED2 LED3
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□ ■
□ ■
■ ■
■ ■
■ ■
☆ ■
☆ ■
☆ ■
□ ☆
LED4
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