TROUBLESHOOTING
General
Symptom
Possible Cause
Solution
No Hot Water
•No Power
•Utility Controlling Load
•Safety Th ermal Cut Off Tripped
•Reset Th ermal Cut Off
•Not Enough Flow Rate To Activate
•Wrong Size Pump
•Plugged Flow Sensor
•Activate Th ermostat/
Clean Flow Sensor
Water Not Hot Enough
•Water Flow Too High
•Reduce Water Flow Rate
•Voltage To Low
•Supply Correct Voltage to Unit
•Glycol/Water Ratio Too High
•More than 20%, less than 50%
•Manifold or Ball Valve Closed
•Open Loops/Ball Valves
LEDs Do Not Light
•Problem With Electronic Controls
Call Tech Support at 800.805.5384
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