Rheem RARL-JEC Installation Instructions - Page 29
ICC Control Operation with Conventional Thermostat Wiring
View all Rheem RARL-JEC manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 29 highlights
CONVENTIONAL THERMOSTAT WIRING 11.9 ICC Control Operation with Conventional Thermostat Wiring Installation Verification • 24V AC power on R&C must be present at the ICC for it to operate • Line voltage must be present at the ICC for the compressor and the outdoor fan to operate • The ICC displays a "0" for standby mode. Standby mode indicates line voltage and 24VAC are present at the ICC and there is not a call for unit operation from the thermostat. Zero (0) displayed The unit is in standby Call for Compressor Operation (Y1 LED) • If a call for compressor operation is received by the ICC (first stage/second stage cooling or first stage/second stage heating), the red Y1 LED will illuminate. • The ICC has an on/off fan delay of one (1) second for each stage of heating or cooling. • The ICC ignores the lower pressure control for the first 90 seconds of compressor operation. • On heat pumps, the ICC ignores the LPC during the defrost cycle. • The dual 7-segment LED displays five (5) operational status codes. 1) First Stage Cooling Operation - When the ICC receives a call for first stage cooling operation, a lower case "c" is displayed on the dual 7-segment LEDs. Lower case "c" indicates first stage cooling operation 2) Second Stage Cooling Operation - When the ICC receives a call for second stage cooling operation, an upper case "C" is displayed on the dual 7-segment LEDs. Upper case "C" indicates second stage cooling operation 3-minute Anti-short Cycle Timer • The ICC has a built in 3-minute time delay between compressor operations to protect the compressor against short cycling. The dual 7-segment LEDs will flash "c" or "C" while the short cycle timer is active and a call for unit operation is received. Flashing lower case c A call for first stage cooling has been received Flashing upper case C A call for second stage cooling has be received • The 3-minute time delay can be bypassed when a call for compressor operation is present by pressing the TEST button for 1 second and releasing. The compressor will begin operation and the dual 7-segment will stop flashing. 29