ELECTRONIC CONTROLS
TESTING THE ELECTRONIC CONTROL
XQ/WS BOARDS & QME BOARDS
Activating Test Mode: Activate test mode by pressing at the same time the “MODE” button and the temperature “DOWN” button on XQ & WS models. LEDs for Hour, Start, and Stop will blink 1 bps while Test Mode is active.
Activate test mode by pressing at the same time the “MONEY SAVER” button and the “CHECK FILTER” button on QME models. LED for the Filter Alert will blink 1 bps while Test Mode is active.
Test Mode has duration of 90 minutes. Test Mode can be activated under any conditions, including Off. Test Mode is cancelled by pressing the On/Off button, unplugging the unit, or when the 90 minutes is timed out. All settings revert to the factory default settings of Cool, 75° F, Timer and Set Hour features are nonfunctional.
Test Mode overrides the
Test Mode default settings are ON, Money Saver, 60° F, and High fan speed.
Activating Error Code Mode: (Submode of Test Mode) Unit must be in Test Mode to enter Error Code Mode
Activate Error Code Mode by pressing the “TIMER ON/OFF” button on XQ & WS models. LED for the “TIMER ON/OFF” will flash 1 bps while Error Code Mode is active. Pressing the “TEMP/HR + “ button will display 00. Consecutive presses will scroll through all error codes logged. Press the “TEMP/ HR - “ button to see the reverse order of all error codes logged. When the end of logged error codes is reached the temperature set point will appear.
Activate Error Code Mode by pressing at the same time the “A/C START” button and the “ON/OFF” button on QME models. LED for the “TIMER ON/OFF” will flash 1 bps while Error Code Mode is active. Pressing the “WARMER” button will display 00. Consecutive presses will scroll through all error codes logged. Press the “COOLER” button to see the reverse order of all error codes logged. When the end of logged error codes is reached the temperature set point will appear.
TESTING THE ELECTRONIC CONTROL
ERROR CODE LISTINGS
IMPORTANT: Error Codes are cleared from the log by exiting from Error Code Mode. To exit on XQ models, press Timer On/Off button. To exit QME models, press A/C Start and On/Off buttons. Or unplug unit to exit Error Code Mode. Plug unit in after 5 seconds to resume normal operation of unit.
TESTING THE ELECTRONIC CONTROL
ERROR CODE LISTINGS
E1 SHORT CYCLE SITUATION: Keyboard is fine. Investigate and define short cycling problem.
E2 KEYBOARD STUCK ERROR: If key button(s) are pressed continuously for twenty seconds or more. If MODE key is stuck, unit will default to cool. Exit Error Code Mode to see if error “E2” is no longer displayed and unit is functioning. Replace board if “E2” still displays after exiting Error Code Mode.
E3 FROST PROBE OPEN: If ohm value is present, replace board.
E4 FROST PROBE SHORT: Replace board.
E5 INDOOR PROBE OPEN: Replace board.
E6 INDOOR PROBE SHORT: Replace board.
NOTE: All Error Code displays for Frost & Indoor Probe will allow unit to operate. Unit may or will ice up if faulty components not replaced.
FROST PROBE SENSOR: disables compressor at 35° F.
INDOOR PROBE SENSOR: Control range is 60° F to 90° F +/- 2° F.
Indoor temperature will be displayed by pressing: (QME units) The Fan Speed button and the Warmer button. (XQ units) The Fan Speed button and the Temp Up button.
The indoor temperature will be displayed for 10 seconds. The display will change back to the Set Point temperature by pressing any key button except for the On/Off button. The indoor temperature can be viewed in all modes, including test mode.
Check Filter: The Check Filter indicator turns on after the fan motor has been operating for 250 hours. The Check Filter indicator is reset by pressing the Check Filter button one time only,. Power failures will not reset the 250 hour timer. All time elapsed is stored in memory and resumes counting after power is restored.
Keep Alive: The electronic control has a memory to retain all functions and status as set up by the user in the event of a power failure. Once power is restored to the unit there is a two second delay before the fan comes on and approximately three minutes delay before the compressor is activated, providing that the mode was set for cooling and the set point temperature has not been met in the room.
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