IMPORTANT SAFETY INSTRUCTIONSThe following symbols and labels are used throughout thismanual to indicate immediate or potential safety hazards. It is
10d. If subcooling is high and superheat is low, adjustTXV valve to 7 to 9 ºF superheat and remove chargeto lower the subcooling to 5 to 7 ºFNOTE: Do
11SystemSystem Operating ModeAirflow Demand SourceCooling Heat PumpHeat Pump Heating OnlyHeat PumpHP + Electric Heat Strips> of Heat Pump or Air Ha
12ACCESSING AND N AVIGATING THE A DVANCED FEATURES M ENUSThe advanced system features are accessed using theComfortNet™ thermostat. These advanced fe
13AIR C ONDITIONER/HEAT P UMP A DVANCED F EATURES M ENUSSubmenu Item Indication (for Display Only; not User Modifiable)Number of AC Stages (CL STG) Di
14AIR C ONDITIONER/HEAT P UMP A DVANCED F EATURES M ENUS ( CONT’D)Submenu Item Indication (for Display Only; not User Modifiable)Mode (MODE) Displays
15LED LED Status Indication Possible Causes Corrective Action(s) Notes & CautionsOff • Normal condition • None • None • None• Depress on
16TROUBLESHOOTING INFORMATION: CONDENSING UNITFor detailed service information refer to the Remote Condensing Unit Service manual.ComplaintSystem Oper
17TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODESDiagnostic/Status LED Codes ComfortNet™ Thermostat Only Symptoms of Abnormal Operation (Legacy
18TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODESDiagnostic/Status LED Codes ComfortNet™ Thermostat Only Symptoms of Abnormal Operation (Legacy
19TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODESSymptoms of Abnormal Operation (Legacy & ComfortNet™ Thermostat) Diagnostic/Status LED Code
2fication sheets can be found at www.goodmanmfg.com forGoodman® brand products or www.amana-hac.com for Amana®brand products. Within either website, p
20TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODESDiagnostic/Status LED Codes ComfortNet™ Thermostat Only Symptoms of Abnormal Operation (Legacy
21Diagnostic/Status LED Codes ComfortNet™ Thermostat Only Symptoms of Abnormal Operation (Legacy & ComfortNet™ Thermostat) Green Yellow Red Red
22TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODESDiagnostic/Status LED Codes ComfortNet™ Thermostat Only Symptoms of Abnormal Operation (Legacy
23Diagnostic/Status LED Codes ComfortNet™ Thermostat Only Symptoms of Abnormal Operation (Legacy & ComfortNet™ Thermostat) Green Yellow Red Red
24SPLIT SYSTEMSAIR CONDITIONING AND HEAT PUMP HOMEOWNER’S ROUTINE MAINTENANCE RECOMMENDATIONSWe strongly recommend a bi-annual maintenance checkup be
3SAFE REFRIGERANT HANDLINGWhile these items will not cover every conceivable situation,they should serve as a useful guide.TOAVOIDPOSSIBLEINJURY,E
4BURYING REFRIGERANT LINESIf burying refrigerant lines can not be avoided, use the followingchecklist.1. Insulate liquid and suction lines separately.
5REFRIGERANTUNDERPRESSURE!FAILURETOFOLLOWPROPERPROCEDURESMAYCAUSEPROPERTYDAMAGE,PERSONALINJURYORDEATH.WARNINGNOTE: Scroll compressors sh
6The unit also has legacy 24 VAC inputs to support non-com-municating systems. Route control wires through the low volt-age port and terminate in acc
7NOTE: The usage of both OD thermostats may require field provided mounting hardware and weatherized enclosures.COLOR CODESR- REDY1 - YELLOW 1Y2 P YEL
8SYSTEM START UPPOSSIBLEREF RIGERANTLEAK!TOAVOIDAPOSSIBL EREFRIGERANTLEA K,OPENTHESERVICEVALVESUNTILTHETOPOFTHESTEMIS1/8”FROMTHE
9EXPANSION VALVE SYSTEMTOPREVENTPERSONALINJURY,CAREFULLYCONNECTANDDISCONNECTMANIFOLDGAUGEHOSES.ESCAPINGLIQUIDREFRIGERANTCANCAUSEBURNS.
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