Zelos
®
Twin 36
EN
Problem
Possible Cause
Solution
Reduced runtime
or boat underpowered
Boat battery charge is low
Completely recharge battery
Boat battery is damaged
Replace boat battery and follow battery instructions
Blocking or friction on shaft or propeller
Disassemble, lubricate and correctly align parts
Boat conditions may be too cold
Make sure the battery is warm (above 10º C [50º F])
before use
Battery capacity may be too low for conditions
Replace battery or use a larger capacity battery
Drive dog is too near the stuffing tube
Loosen drive shaft side of the motor coupling and move
drive shaft small amount back
Too little lubrication on drive shaft
Fully lubricate drive shaft
Vegetation or other obstacles block rudder or
propeller
Remove vegetation or obstacles from rudder or propeller
Motor couplers are loose
Tighten motor couplers and ensure the coupler is free of
lubrication
Boat will not bind
(during binding) to
transmitter
Transmitter is too near boat during binding pro-
cess
Move powered transmitter a few feet from boat,
disconnect and reconnect battery to boat
Boat or transmitter is too close to large metal
object, wireless source or another transmitter
Move the boat and transmitter to another location and
attempt binding again
Another compatible transmitter is powered on
within range of the receiver
Power off all compatible transmitters except the one you
are trying to bind
Boat battery/Transmitter battery charge too low
Replace/recharge batteries
ESC switch is off
Power on ESC switch
Boat will not connect
(after binding) to
transmitter
Transmitter is too near boat during connecting
process
Move powered transmitter a few feet from boat,
disconnect and reconnect battery to boat
Boat or transmitter is too close to large metal
object, wireless source or another transmitter
Move boat or transmitter to another location and attempt
to connect again
Boat battery/transmitter battery charge is too
low
Replace/recharge batteries
ESC switch is off
Power on ESC switch
Boat tends to dive in the
water or takes on water
The boat hull is not completely closed
Dry out the boat and ensure the hatch is fully closed on
the hull before returning the boat to the water
Center of gravity is too far forward
Move batteries back in the hull
Boat tends to turn
one direction
Rudder or rudder trim is not centered
Repair rudder or adjust rudder and rudder trim for
straight running when control is at neutral
ESC may require full throttle range calibration
Calibrate the ESC
Rudder does not move
Rudder, linkage or servo damage
Replace or repair damaged parts and adjust controls
Steering servo wire is damaged or
connections are loose
Do a check of steering servo wires and connections,
connect or replace as needed
Transmitter is not bound correctly
Re-bind
BEC (Battery Elimination Circuit) of the ESC is
damaged
Replace ESC
ESC switch is off
Power on ESC switch
Controls reversed
Transmitter settings are reversed
Do the Control Direction Test and adjust controls on
transmitter appropriately
Motor overheats
Blocked water cooler tubes
Clean or replace water tubes
Motor power pulses
then motor loses power
ESC uses default soft Low Voltage Cutoff (LVC)
Recharge or replace boat battery
Weather conditions might be too cold
Postpone until weather is warmer
Battery is old, worn out or damaged
Replace battery
Boat blows over upon
acceleration
Batteries are too far back in the battery tray
Move the batteries forward to adjust the boat’s center
of gravity
Struts have too much positive angle, causing the
nose of the boat to lift and blow over
Adjust a more neutral or negative strut angle
Water conditions are too choppy or windy
Adjust the struts downward to drive the bow of the boat
down or move the batteries further forward for better
weight distribution
Troubleshooting Guide
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