Troubleshooting - Honeywell JADE W7220 Product Data

JADE™ ECONOMIZER MODULE
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ERV Operation: When in Cooling mode AND the conditions
are NOT OK for economizing - the ERV terminal will be
energized. In the Heating mode the ERV terminal will be
energized when the OA is below the ERV OAT setpoint in
the setpoint menu.
CAUTION
Equipment damage may result.
Be sure to allow enough time for compressor startup
and shutdown between checkout tests so that you do
not short-cycle the compressors.

TROUBLESHOOTING

Power Loss (Outage or Brownout)
All setpoints and advanced settings are restored
power loss or interruption.
NOTE: If power goes below 18 Vac, the W7220 controller
module assumes a power loss and the 5 minute
power up delay will become functional when power
returns above 18 Vac.
Alarms
The Economizer module provides alarm messages that
display on the 2-line LCD.
NOTE: Upon power up, the module waits several seconds
before checking for alarms. This allows time for all
the configured devices (e.g. sensors, actuator) to
become operational.
If one or more alarms are present and there has been no
keypad activity for at least 5 minutes, the Alarms menu
displays and cycles through the active alarms.
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All settings are stored in non-volatile flash memory.
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You can also navigate to the Alarms menu at any time.
ALARMS(_)
NOTES:
1.
2.
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after any
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When AUX is set to SYS and there is any alarm (e.g., failed sensors,
etc.), the AUX terminal has 24 Vac out and the LCD displays the SYS
ALARM.
Clearing Alarms
Once the alarm has been identified and the cause has been
removed (e.g. replaced faulty sensor), the alarm can be
cleared from the display.
To clear an alarm, perform the following:
1. Navigate to the desired alarm.
2. Press the
3. ERASE? displays.
4. Press the
5. ALARM ERASED displays.
6. Press the
action and return to the previous menu.
NOTE: If an the alarm still exists after you clear it, it re-
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Table 10. Alarms Menu.
Menu
MA T SENS ERR
CO2 SENS ERR
OA T SENS ERR
DA ENTHL ERR
SYS ALARM
The Alarms menu displays only when alarm(s)
are active and includes the number of active
alarms in parenthesis ().
The alarms listed are a few examples. Additional
alarms display depending on the parameter
settings and configuration.
↵
button.
↵
button.
button (MenuUp/Exit) to complete the
displays within 5 seconds.
Alarm
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