Operator`s manual
PUREHEAT™ HYDRONIC AIR HEATER OPERATOR’S MANUAL – SECTION 6
V. 2, Rev. 09/01/06 © 2006 Ground Heaters, Inc. 6- 1
TROUBLESHOOTING
6.1 TROUBLESHOOTING CHART
(Contact your local Ground Heaters Distributor for situations not covered in this section.)
NOTE: Discontinue
troubleshooting activities and shut down the Pureheat™ Hydronic Air Heater if one of
the
following occurs:
1. One of the GFIs trips and will not remain reset.
2. An electric motor "hums" but does not turn.
3. The Burner Safety will not reset when the MANUAL RESET button is pushed.
4. Dark smoke emits from the hydronic heater exhaust.
Once the Pureheat™ is shut down; call your local Ground Heaters Distributor for assistance.
HTF too cold.
• Warm HTF pump.
Low Voltage.
• Correct low voltage.
Heat transfer
fluid pump
turns but trips
breaker.
Pump pressure below 30 psi.
• Throttle valve #2.
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Section 2.4
Insufficient power supply.
• Have an electrician verify voltage at burner
motor is 110 volts (min.) while attempting to
start burner motor.
• Ensure power cords are at least 10 gauge
wires and ≤ 100 ft (30.5 m) in length.
• Verify power cords are supplied by
separate 20 amp 120 volts AC 60 Hz
electrical power circuits.
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Burner motor
will not start.
Power supply sufficient but no
power to burner motor.
• Call your Ground Heaters Distributor.
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Symptom Possible Cause Corrective Action Refer To
No power due to incorrect switch
position or protective function.
• Verify both
MAIN BREAKERS are ON.
• Verify both
GFIs are reset.
• Verify LOW LEVEL FAULT light is not
lit.
• Verify HTF level is between MIN and MAX.
Appendix
A-2
Section 2
Heat transfer
fluid pump will
not start.
Motor internal overload is
tripped.
• Allow motor to cool; it will reset
automatically.
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Low voltage caused by
inadequate power supply; poor
quality; or excessively long
extension cords.
• Have an electrician verify voltage at control
panel is 110 volts (min.) while
attempting to
start
pump motor.
• Ensure power cords are at least 10 gauge
wires and ≤ 100 ft (30.5 m) in length.
• Verify power cords are supplied by
separate 20 amp 120 volts AC 60 Hz
electrical power circuits.
Heat transfer
fluid pump
turns but does
not start.
HTF too cold (-20ºF [-28.9ºC]).
• Warm HTF pump.
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