- Improved automatic fan power detection for existing, non-cat5 systems
- Fixed issue where AFPD trigger will sometimes disable compressor operation
- Changed HVAC alarm output to exclude A15 and A16
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Improved fan type selection (SF1 under D menu):
- Before change: 0 = AC fan (default), 1 = DC fan
- After change: AUT = Automatic selection (default), AC = AC fan, DC = DC fan
- Fixed compatibility issue with DC Fan Systems
- Fixed bug that allowed de-humidification to run when not needed
- Fixed a bug with heater during comfort mode when comfort mode setpoint is set to above the cooling setpoint
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Added a customize-able dry contact output (terminal #51 & #52) that can be mapped to any alarm
- Dry contact output can be accessed through U5E under the L04 menu.
- Example1: If this parameter is set to 5, an A05 (smoke fire) alarm will trigger an output which allows an installer to run a single wire from the smoke/fire alarm to the controller and from the controller to the NOC.
- Example2: If this parameter is set to 15, the A15 (dirty air filter) alarm will report to the NOC.
- Added automatic de-humidification mode
- De-humidification mode can be enabled by accessing the U60 parameter in the L04 menu. Change from No (default) to Yes.
De-humidification mode will control relative humidity (RH) to 55% (adjustable by accessing U61 parameter)
De-humidification mode trigger threshold is RH control point (U61) + 15% (adjustable by accessing U62)
Note: De-humidification mode is not as energy efficient and should only be enabled for sites experiencing excessive humidity
- Added Maintenance Mode to Step Test (steps 9 and 10) allowing quick verification of system performance during maintenance
- Step 9: Enable Fan and Heater for both Lead and Lag WPUs
- Step 10: Enable Fan, Compressor, and Damper (will open to 100%) for both Lead and Lag WPUs
- Changed default system setpoint to 79
- Bug Fix: Corrected issue with humidity (A19) alarm not properly reporting when humidity sensor loose from its seat
- Bug Fix: Corrected issue where humidity (A19) alarm did not properly shut off Free Cooling
- Audible Alarm tone is now silenced by default. May be enabled by changing parameter F48 in the L05 menu
- Eliminated time limit when running step test
- Increased the available records in alarm history from 16 to 32 when remotely monitoring system
- Bug Fix: Alarm history sequencing corrected. Alarms 100-200 will now properly display
- 2nd compressor sun alarm (A23) can now be disabled (Parameter E23, D Menu).
- Free Cooling can now run during A26/27 if Outdoor Temperature is greater than Minimum Free Cooling set temperature (default 51.8˚ +/- 1.8˚F)
- Damper alarm now disabled until 20 min after heater turn off
- Eliminated possible key combinations to bypass password protection for manufacturer’s menu
- Emergency Ventilation Mode now bypasses Dirty Air Filter alarms
- Changes to High Temperature (HT) parameter will now link to controller module 2
- Compressor will no longer start when indoor temperature falls below compressor turn on point during FC delay
- Bug Fix: alarm history can now be erased via remote interface
- Bug Fix: D5A parameter will no longer be skipped when viewing C menu parameters
- Corrected supply fan start and run counters to track only if signal input is > 3v
- Removed compressor delay due to Free Cooling if Free Cooling has been disabled (manually or automatically)
- Alarm History can now be accessed via remote monitoring
- Changed system default to automatically disable Free Cooling if Dirty Air Filter alarm (A15/16) is triggered
- Alarm will silence when triggering condition is no longer present
- Keep Sel button lit even if condition is no longer present
- Added 1 hour delay for audible alarm after Sel pressed
- Supply fan will now keep running for 30 seconds after heater stops
- Improved damper failure diagnostics
- Tighter Free Cooling (FC) supply air temperature control
- Coastal mode: FC only during emergency
- A31/32 cleared when power is restored
- Removed A10/A11 alarm triggering from repowering the unit.
- Added in temperature set point default reset.
- Added A29 and A30 (HVAC Airflow defective or DC part powered off) alarms (will only affect units with DC fan)
- Added A31 and A32 (AC Power Off) alarms (will only affect units with DC fan)
- Humidity limit default changed to 85%.
- Added adjustable comfort mode (1-9 hours), default 1 hour
- Added AC1/AC2/CFT menu
- FC difference default changed to 3.6F
- Removed default minimum fan speed.
- Added SU2 for 2nd supply temp sensor
- Supply fan “off” output reset as soon as prime power is reconnected
- Lag compressor turns on only when lead is not functioning in Generator Mode
- Added 180 seconds compressor delay after Generator Mode or controller reset
- Added compressor delay (3 min) whenever Generator Mode is restored to normal
- 2nd compressor can be turned on during Generator Mode through setting. Default set to No.
- Added A28 for Generator Mode.
- Added pLD display for A09 (Prime Power loss)
- F03 and F04 default changed to 10F
- Manual mode can now be accessed when units are on.
- Added 30s delay for A05.
- Minimum set point for u06 changed to 0.
- When appropriate parameters are changed on module 1, module 2 will also be affected through pLAN
- Pressure alarm now has 30 second delay after supply fan on, and every 10 seconds thereafter
- Supply fan overload delay changed to 0s
- Added in corresponding flashing lights for pLD for lockout condition
- Fixed brief heater operation whenever primary temp sensor is not attached/broken. rot changed to C menu. Temperature unit changed to -C-/-F-。