Troubleshooting Procedures; Troubleshooting Chart - Johnson Controls METASYS Zone Terminal Installation Sheet

Troubleshooting Procedures

Troubleshooting
Chart
* For Errors 1, 2, 3, 4, and 6—Re-power device two or three more times.
** For Error 5—This is only a warning and indicates the battery-backed
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Problem
Displays remain blank after ZT is
connected
Displays show only dashes - - - - -
Displays show all dots . . .
Displays show 99999
Displays show -9999
Displays show Err 01
Displays show Err 02
Displays show Err 03
Displays show Err 04
Displays show Err 05
Displays show Err 06
Cannot enter Adjust Mode
Cannot enter Time Scheduling Mode
ZT reverts back to Monitor Mode
One minute lapse in time scheduling has
occurred at Midnight
Numbers in the display do not relate to the
items listed on the insert
If error still exists, disconnect ZT and run diagnostics by holding the
Display Key 1 and Adjust Down ( ↓ ) Key when the phone jack is
plugged in. The word
display segments light up for "Pass." When all segments light, push
Display Key 1 two times, and then follow the prompts.
data, specifically Time Scheduling, has been lost. If you press Enter,
the ZT loads the default time schedule and you may continue. Replace
the battery at your earliest convenience. Use a Panasonic® lithium or
Ray-O-Vac®—battery number BR2325.
Solution
No power is getting to the ZT—check for appropriate
connections.
ZT unit is operational, but not communicating with the
controller. Check the Zone Bus wire/controller. If no wiring
errors are found, download the AHU w/HVAC PRO, Rel 3.
Download in ZT does not match connected controller, or
download is invalid. Select correct download (ZT load file)
and re-load the ZT.
An entered number is too large to display.
An entered number is too small to display.
Internal RAM/Processor Error*
External RAM Error*
E 2 PROM Error*
ROM (Code) Error*
Battery Bad**
Battery-backed RAM Error*
Has proper Password been entered?
Do you have Password access to this mode?
Has proper Password been entered?
Do you have Password access to this mode?
Is the ZT plugged into the controller selected for Time
Scheduling?
ZT has timed-out. Re-enter your Password and begin
again.
Enter 24:00 to cross the day boundary.
The insert is not the correct one for this ZT and Controller.
Verify the insert number by entering Password Mode.
appears on Display 1 at the start, and all
DIAG
Zone Terminal 23