Troubleshooting - Honeywell JADE W7220 Installation Instructions Manual

JADE™ ECONOMIZER MODULE
POWER UP
After the module is mounted and wired, apply power.
Power Up Delay
Upon power up (or after a power outage or brownout), the
W7220 controller module begins a 5 minute power up delay
before enabling mechanical cooling.
Initial Menu Display
On initial start up, Honeywell displays on the first line and
Economizer W7220 on the second line. After a brief pause,
the revision of the software appears on the first line and the
second line will be blank.
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.

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.
a
All settings are stored in non-volatile flash memory.
62-0331—03
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.
You can also navigate to the Alarms menu at any time.
ALARMS(_)
NOTES:
1.
a
after any
2.
a
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
a
cleared from the display.
after any
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-
6
Table 1. 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
a