Troubleshooting - Honeywell JADE W7220 Manual

JADE™ ECONOMIZER MODULE
Table 9. Checkout Menu. (Continued)
Checkout Item
CONNECT AUX1 O Energizes the AUX1 O output. If AUX1 O
setting is:
• NONE – no action taken
• ERV – 24 Vac out. Turns on or signals
an ERV that the conditions are not good
for economizing but are good for ERV
operation.
• SYS – 24 Vac out. Issues a system
alarm.
Closes the power exhaust fan 1 relay
CONNECT EXH1
(EXH1)
a
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 60 minutes
before checking for alarms. This allows time for
all the configured devices (e.g. sensors,
actuator) to become operational. The exception
is the MA sensor which will alarm immediately.
a
All settings are stored in non-volatile flash memory.
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Checkout Test
a
a
after any
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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.
Table 10. Alarms Menu.
Menu
ALARMS(_) MA T SENS ERR
CO2 SENS ERR
OA T SENS ERR
DA ENTHL ERR
SYS ALARM
ACT UNDER VOLTAGE
ACT OVER VOLTAGE
ACT STALLED
NOTES:
1. The Alarms menu displays only when alarm(s)
are active and includes the number of active
alarms in parenthesis ().
2. The alarms listed are a few examples. Additional
alarms display depending on the parameter
settings and configuration.
a
When AUX1 O is set to SYS and there is any alarm (e.g., failed
sensors, etc.), the AUX1 O 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
button.
3. ERASE? displays.
↵
4. Press the button.
5. ALARM ERASED displays.
6. Press the button (MenuUp/Exit) to complete the
action and return to the previous menu.
NOTE: If an the alarm still exists after you clear it, it re-
displays within 5 seconds.
M.S. Rev. 02-12
Alarm
a