Additional Troubleshooting For Size 290 Only - Daikin Enfinity Installation And Maintenance Manual

Table 37: Low entering water temperature (no display on boilerless electric heat)
Description
Low Entering Water Temperature (No
Display On Boilerless Electric Heat)
• Verify entering water temperature is greater than set point.

Additional troubleshooting for size 290 only

IMPORTANT
The compressors in this unit are supplied with advanced
diagnostics. Should this unit fail to operate properly with solid
green lights (no faults) check the module on each compressor
and refer to the troubleshooting section in this manual.
Table 38: CoreSense™ communications LED flash code information
Status
Solid Green
Solid Red
Green Flash Code 1
Green Flash Code 2
Green Flash Code 3
Green Flash Code 4
Green Flash Code 5
Red Code Flash 1
Red Flash Code 2
Red Flash Code 3
Red Flash Code 4
Red Flash Code 5
IM 1059-12 LARGE VERTICAL WSHP
Type
Fault
Fault Conditions
Normal Operation
Module Malfunction
Module and master controller
have lost communications with
Loss of Communication
each other for more than 5
Future Use
Short Cycling minute; number of short cycles
Improper dipswitch 9 setting
Future Use
Alert Lockout LED Flash
Motor High Temperature
Open/Shorted Motor Ω > 220K or Ω < 40; Lockout
Thermistor
minute; Lockout if the number
Short Cycling of alerts exceeds the number
configured by the user in 24
Not Used
Future Use
Yellow
OFF
Code Fault Description Code Reset Description
Module is powered and
operation in normal
Module has internal fault
Warning LED Flash
When communications are
minutes
N/A
Run time of less than 1
<48 short cycles in 24 hours
exceeds 48 in 24 hours
N/A
N/A
Ω > 4.5K; Lockout after 5
Ω > 2.75K and minutes
alerts
40 < Ω < 2.75K and 30
after 6 hours
Run time of less than 1
Interrupt power to T2-T1 or
perform Modbus reset com-
hours
N/A
N/A
46
t
roubleshooting
Green
ON
Troubleshooting Information
N/A
1) Reset module by removing
N/A power from T2-T1
2) Replace module
1) Check the control wiring
confirmed 2) Verify dipswitch 8 is "ON"
N/A
1) Check system charge and
pressure control setting
2) Adjust set-point of tempera-
ture controller
3) Install anti-short cycling
control
N/A Verify dipswitch 9 is "OFF"
N/A
1) Check supply voltage
2) Check system charge &
superheat
3) Check contactor
1) Check for poor connections
at module and thermistor
fusite
2) Adjust set point of tempera-
minutes
ture controller
3) Install anti-short cycling
control
1) Check system charge and
pressure control setting
2) Adjust set point of tempera-
ture controller
mand
3) Install anti-short cycling
control
N/A
N/A
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Red
Flash
N/A
N/A
N/A
N/A
N/A