Common Vista 21 keypad error codes include AC LOSS (no AC power), OPEN CIRCUIT (keypad not communicating with the panel),...

Listed below are several keypad messages you may see on the display. Follow the instructions in the Possible Solutions column...

The GEM-RP1CA/RP1CAe/RP1CAe2 Keypad can display the following messages. The GEM-RP2AS/RP2ASe/RP2ASe2 will display similar abbreviated messages that may scroll through two...