Symptom
Probable Cause
Corrective Action
Well not hot enough.
Unit not allowed to preheat.
Hydro-heaters require a minimum of 30 minutes to
preheat.
Setpoint temperature set too low.
adjust the HOT controller setpoint temperature to a
higher setting. Refer to the “Changing the Setpoint
Temperature” procedure in the OPERaTION section.
Digital temperature controller not working
properly.
Contact authorized Service agent or Hatco for
assistance.
Heating element(s) not working.
Contact authorized Service agent or Hatco for
assistance.
Voltage supplied is incorrect.
Verify correct voltage is supplied to unit. Unit will not
operate properly with low supply voltage.
Heated wells too hot.
Setpoint temperature set too high.
adjust the HOT controller setpoint temperature to a
lower setting. Refer to the “Changing the Setpoint
Temperature” procedure in the OPERaTION section.
Digital temperature controller not working
properly.
Contact authorized Service agent or Hatco for
assistance.
Voltage supplied is incorrect.
Verify correct voltage is supplied to unit. High supply
voltage will cause unit to overheat and my damage unit.
No heat.
Drain lever is not in the closed position.
move drain lever forward to closed position and make
sure Power I/O (on/off) switch is in HOT “I” (on)
position. Lever must be in the closed position for unit
to operate in HOT mode.
Circuit breaker tripped.
Reset circuit breaker. If circuit breaker continues to
trip, contact authorized Service agent or Hatco.
The Hydro-Heater energy cut-off switch
was activated.
The unit overheated—likely due to a low water level.
Fill the unit to the proper water level, and move the
Power I/O (on/off) switch to the center “O” (off)
position and then back to the HOT “I” (on) position.
Temperature Control not working properly. Contact authorized Service agent or Hatco for
assistance.
Heating element(s) not working.
Contact authorized Service agent or Hatco for
assistance.
auto-Fill system not working. Water level probe is dirty and not “sensing”
properly.
Perform the “Daily Cleaning” procedure in the
maINTENaNCE section with special focus on the
water level probe.
Water not supplied to fill valve.
Verify water supply is correctly installed and running.
Water fill valve malfunctioning.
Contact authorized Service agent or Hatco for
assistance.
Heating element(s) burn
out.
The well is dry or has a low level of water. Verify water supply is correctly installed and running.
If problem is not with water supply, contact authorized
Service agent or Hatco for assistance.
Deposits built up in the heater pipes are
restricting water flow. (Perform the entire
“Daily
Cleaning”
procedure
in
maINTENaNCE section.)
Contact authorized Service agent or Hatco for
assistance.
16
Form No. HCWBIm-0913
TROUBLESHOOTING GUIDE
This unit must be serviced by qualified personnel only.
Service by unqualified personnel may lead to electric
shock or burn.
WARNING
ELECTRIC SHOCK HAzARD: Turn OFF power switch, turn
off power at circuit breaker, and allow unit to cool before
performing any cleaning, adjustments, or maintenance.
WARNING
HOT Mode Troubleshooting
