What error codes can appear on the GlucoRx HCT & Ketone TD-4279, and what do they mean?

The meter displays several error codes: E-b (batteries too low), E-C (wrong code strip or coding error), E-2 (expired code strip), E-U (used test strip inserted), E-t (temperature outside operating range), E-0/E-A/E-E (meter problem), and E-F (test strip removed during countdown or insufficient blood volume). For E-t, move the meter and test strip to within the operating range of 10°C to 40°C (50°F to 104°F) before retesting. If any error persists, contact GlucoRx Customer care on 01483 755133. (Page 29)