Troubleshooting Tips - Ruffneck FX5 Serie Instructions D'installation, D'utilisation Et D'entretien

C.

TROUBLESHOOTING TIPS

1. Heater is not operating.
1.1 Check all fuses in heater control box.
1.2 Check remote disconnect switch and circuit breaker.
1.3 Check voltage supplied to the heater – refer to the
heater data plate for voltage requirements.
1.4 Check thermostat by turning it and check continuity
with a multimeter.
1.5 Check the condition of the disconnect switch if the
heater is so equipped. Measure continuity through
the disconnect by engaging the switch.
1.6 Verify that there is a jumper wire present between
terminals 5 and 6 on the terminal block located in
the control box.
2. Contactor is chattering.
2.1 Check supply voltage.
2.2 Check wiring connections. Tighten all loose
electrical connections.
2.3 Check thermostat for continuity (See 1.4,
page 6). If thermostat does not break continuity
replace thermostat.
3. Contactor is burned or welded.
3.1 Check the contactor for burn marks and blackening.
Replace the contactor.
3.2 Check incoming power to the heater to ensure there
are no voltage fluctuations.
4. Heat exchanger is dirty.
4.1 Clean the heat exchanger using compressed air.
5. PRV has released.
5.1 If there are signs that the PRV has released fluid,
PRV indicator is broken, blackening around the PRV
exit hole, or there are fluid stains visible on the top
louver, shut the unit down immediately.
5.2 Check for restricted air flow, bad motor, broken
thermostat or malfunctioned high limit.
6. Heater is cold on top and warm on bottom.
6.1 The core may have lost its vacuum. Check the PRV
for signs of loss of fluid and verify that the PRV label
indicator is not broken. If PRV has released, send
the unit in for repair or replace the core.
6.2 If the PRV does not indicate loss of fluid, the heater
should operate normally.
6.3 The ambient temperature may be too low. If the
ambient temperature is very cold the top of the core
will be colder than the bottom – this is normal.
7. Unit cycles on high limit – unit turns on and turns off within
less than 5 minutes.
7.1 Check and see if the PRV has released fluid. Core
may have lost most or all of its fluid. If PRV has
released, send the unit in for repair or replace core.
6 6
7.2 The core may be dirty, fan may not be working or
may be turning the wrong way (the fan must rotate
clockwise as seen from the front of the unit) objects
may be stuck in the heat exchanger for drying or
warming up – remove any items from the exchanger.
8. The Ground Fault Interrupter (GFI) trips on the main panel,
or heater blows fuses.
8.1 Check that you have a fuse of the proper amperage
rating.
8.2 Check for loose or frayed wiring.
8.3 If condition is not observable, send heater in for repair.
8.4 Change sensitivity of GFI.
9. The fan is turning but very little air comes from the front of
the heater.
9.1 Check fan rotation and ensure that the fan turns
clockwise as seen from the front of the heater. Refer
to the Installation section below for more information.
9.2 Check motor winding resistance and verify that they
are balanced.
9.3 Check fan blade set screws to ensure fan blade is
not loose on the motor shaft.