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10. Replacing batteries and fuses
Batteries:
Battery type: 8 x LR6 (AA), 1.5 V Alkaline, or 8 x 1.2 V NiMH
10.1 Low battery warning symbol
The battery condition is continuously displayed by the following symbols.
If the battery symbol drops to two bars the batteries will need replacing.
To replace the batteries follow the procedure in 10.2 below. Please dispose of exhausted
batteries carefully.
In addition, the main display warns that batteries need replacing. No further testing is possible until batteries
have been replaced.
Note: NiMH rechargeable batteries show a lower charge than Alkaline batteries, and may not give much warning
before becoming exhausted.
Faulty, stuck key or switch position.
Instrument malfunction. If repeated follow returns procedure.
Any E followed by a number, ie E001, E002…
Over voltage warning.
For LTW315 the warning will be <280 V.
No Zref value stored, or test result lower than stored Zref.
Zref measurement required before an R1+R2 measurement can be made.
Loop test result out of display range.
Supply frequency out of range. Display switches between
frequency and voltage. Display shows <49.00Hz or >51.00Hz.
Severe noise on supply. Re-test.
