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MODELS 87106, 87121, 87122, 87128, & 87151
1. NO AMMETER READING and NO INDICATOR
LIGHTS (Charging has not yet started)
Ξ Make sure charger is plugged into a LIVE ac outlet.
Ξ After unplugging unit, check connections at battery.
Make sure the battery posts are clean and the
clamps are making good contact with the battery
terminal and other point of connection.
Ξ Check to see that battery is capable of being
charged. It may be damaged, sulfated, or have an
open circuit.
Ξ Make sure you have selected the proper charge
voltage for the battery being charged.
Ξ Battery may need preactivation. (See Operating
Instructions.)
Ξ Verify that the vehicle's battery cables are in good
condition and properly connected to the battery,
especially the ground terminal.
Ξ The battery may already be fully charged.
2. LOW AMMETER READING and NO INDICATOR
LIGHTS (Charging has been in process)
Ξ Battery is nearing full charge, green light will
eventually turn on.
Ξ The 2 amp setting has been selected for charging a
larger 12 volt battery (not applicable to the 87122).
In this mode, full charge may never be reached to
allow the CHARGE COMPLETE light to turn on.
Switch to 10 amp, 12 amp, or 15 amp - 12 volt
setting (as applicable).
MODELS 87102, 87104, 87105, 87120, 87150 & 87302
1. NO AMMETER READING
Ξ Make sure charger is plugged into a LIVE ac outlet.
Ξ After unplugging unit, check connections at battery.
Make sure the battery posts are clean and the
clamps are making good contact with the battery
terminal and other point of connection.
Ξ Check to see that battery is capable of being
charged. It may be damaged, sulfated, or have an
open circuit.
Ξ Make sure you have selected the proper charge
voltage for the battery being charged.
ALL MODELS (Except Models 87102, 87104, & 87122)
VEHICLE WILL NOT START WHEN USING THE ENGINE
START SETTING
Ξ After unplugging unit, check connections. Make
sure the clamps are making good contact with the
battery terminal and other point of connection.
Ξ If ammeter reads zero, the internal circuit breaker
may have tripped. Wait six to seven minutes. The
circuit breaker will reset automatically and the
ammeter needle will again register amperage.
TROUBLESHOOTING
Ξ If green CHARGE COMPLETE indicator does not
come on within 8 hours of charging on the 12 Volt –
10, 12, or 15 amp setting, have the battery
professionally tested. If the battery is defective,
replace battery. If battery is OK, call Battery Charger
Service at (866) 236-0044.
Ξ If meter reading is between 1 and 5 amps on the
10, 12, or 15 amp setting, have the battery
professionally tested or replaced.
3. NO AMMETER READING, REVERSE HOOK-UP
INDICATOR IS ON
Ξ The charger's output cables are reversed at the
battery and other point of connection. Unplug
charger, correct the hook-up, then plug charger in
and resume charging.
4. NO AMMETER READING, but CHARGE
COMPLETE INDICATOR IS LIT
Ξ Battery is fully charged. Charger may be
disconnected at any time.
5. CHARGE COMPLETE INDICATOR IS ON, BUT
BATTERY EYE DOES NOT INDICATE FULL
CHARGE
Ξ When the CHARGE COMPLETE indicator comes
on, the battery IS fully charged. However, due to
electrolyte stratification, the hydrometer eye in the
battery may not immediately indicate full charge. To
get the eye to register full charge, set the SELECT
FUNCTION switch to START and charge for one
more hour on the 10, 12, or 15 amp setting.
Ξ Verify that the vehicle's battery cables are in good
condition and properly connected to the battery,
especially the ground terminal.
2. LOW AMMETER READING
Ξ The 2-amp setting has been selected for charging
a larger 12 volt battery. Unless you desire an
extremely long recharge time, switch to the high
12 volt setting (10 amp, 12 amp, or 15 amp, as
applicable.
Ξ If meter reading is between 1 and 5 amps on the
10, 12, or 15 amp setting, have the battery
professionally tested or replaced.
Charge battery for another 5–15 minutes and
attempt to start the engine again.
Ξ If after several attempts, the engine still won't start,
there may be a problem with the engine that will
need to be corrected before it can be started or the
battery may not be capable of accepting a charge
and will need to be replaced.
Ξ Verify that the vehicle's battery cables are in good
condition and properly connected to the battery.
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