MrCool Olympus Series User Manual

Page 52mrcool.com
Wiring/Piping Self-Correction Function (Multi-Zone systems ONLY)
Operating Instructions of Self-Correction Function
Check Switch
Fig. 11.1
Multi-Zone condensers have a self-check function for wiring-to-piping association errors. Press the "check
switch" on the outdoor unit PCB board for 5 seconds until LED displays "CE". Approximately 5 to 10 minutes
after the switch is pressed, the "CE" will disappear when the wiring and piping have been reorganized and the
error is corrected. Refer to Fig. 11.1.
NOTE: This function only works in situations where either all of unit A Air Handler wiring has been
connected to the terminals of the condenser meant for the unit B Air Handler or all of unit B Air
Handler wiring has been connected to the unit A Air Handler terminals of the condenser. This
scenario also assumes that the indoor unit wiring is connected correctly. There can be no cases of
a partial association mismatch, such as a cross terminal/partial wiring mismatch or one side of the
refrigerant system being crossed between handlers. Refer to Fig. 11.2.
Fig. 11.2
Gas Line
Liquid Line
Wiring
B
A
A
B
AIR HANDLER UNIT A
AIR HANDLER UNIT B
B
B
A
A
B
A
A
B
AIR HANDLER UNIT A
AIR HANDLER UNIT B
B
B
A
A
B
A
A
B
AIR HANDLER UNIT A
AIR HANDLER UNIT B
B
B
A
A
CORRECT CONNECTION
INCORRECT - CONNECTION CAN BE CORRECTED
NO OTHER CORRECTABLE COMBINATIONS
(gas/liquid lines cannot be mixed between units)
Self-Correction Function (Multi-Zone Models ONLY)
LED Display
1. Check that outside temperature is above 41°F (5°C). This function will not work when outside
temperatures are at or below 41°F (5°C).
2. Check that the stop valves of the liquid pipe and gas pipe are fully opened.
3. Turn on the breaker and wait at least 2 minutes.
4. Press the check switch on the outdoor unit PCB board until the LED displays "CE".
5. In circumstances where the wiring for one unit is mismatched with the piping of the other, the system will
correct itself, reorganizing the wiring to the associated piping.
6. After 5 to 10 minutes, if the system has corrected itself, the “CE” will disappear from the display. If the
system did not correct itself, then the system will have to be shut down and the piping/wiring will need to
be re-checked against the manual to find the wiring corrections that will need to be made.

MrCool Olympus Series Specifications

General

Brand	MrCool
Model	Olympus Series
Category	Air Handlers
Language	English