iFLOW HVAC INC.
www.iflowhvac.com
31
Troubleshooting
1) Fault codes and Explanations:
Segment
Code
Description
Cause
Sensor
001
Supply Air Temp. Sensor
Sensor has no continuity.
Sensor is out of measuring range.
Faulty Sensor.
002
Return Air Temp. Sensor
003
Supply Water Temp. Sensor
004
Return Water Temp. Sensor
005
A/C Evap. Temp. Sensor
006
D.H. Evap. Temp. Sensor
007
Outdoor Temp. Sensor
008
Humidity Sensor
101
Supply Zone 1 Temp. Sensor
102
Supply Zone 2 Temp. Sensor
103
Supply Zone 3 Temp. Sensor
104
Supply Zone 4 Temp. Sensor
105
Return Zone 1 Temp. Sensor
106
Return Zone 2 Temp. Sensor
107
Return Zone 3 Temp. Sensor
108
Retrun Zone 4 Temp. Sensor
109
Zone 1 Pressure Sensor
110
Zone 2 Pressure Sensor
111
Zone 3 Pressure Sensor
112
Zone 4 Pressure Sensor
Resolution Check sensor reading against corresponding temperature sensor chart.
If out of range, replace sensor
Heat
Exchanger
020
H/ex. Freeze Protection
Ambient Temperature below 40 °F
Resolution Unit will automatically run circulator until temperature is increased.
021
H/ex. Overheating
Resolution Ensure proper CFM and GPM. Make sure no restriction of water flow and airflow. Check sensor.
Replace if necessary. Check filter. Check pump operation.
022
Wrong pinping. (Return water temperature higher than supply water temperature.)
Resolution Check inlet and outlet pipe connection, check S.W.T. sensor, R.W.T. sensor.
A/C
Evaporator
030
A/C Evap. Freeze protection
Evaporator temperature below 32 deg
Resolution Check airflow. Check refrigerant level. Check proper A/C operation.
A/C
Evaporator
031
A/C Evap. Overheating
Air temperature ∆T below 5˚F
Resolution Excessive CFM. Ensure proper A/C operation
D.H.
Evaporator
040
D.H. Evap. Freeze protection
Evaporator temperature below 37˚F
041
D.H. Evap. Overheat
Air temperature ∆T below 5˚
Summary of Contents for iFLH-14000W
Page 24: ...iFLOW HVAC INC www iflowhvac com SZ Field Installation Wiring Diagram 24 See Details Page 29...
Page 26: ...iFLOW HVAC INC www iflowhvac com DZ Field Installation Wiring Diagram 26 See Details Page 29...
Page 28: ...iFLOW HVAC INC www iflowhvac com QZ Field Installation Wiring Diagram 28...
Page 30: ...iFLOW HVAC INC www iflowhvac com 4 Ladder Diagram 30...
Page 43: ...iFLOW HVAC INC www iflowhvac com 43 Installation on the wall...