Carrier Aquazone 50QE900 Installation And Operating Instructions Manual

Also see for AQUAZONE 50QE900: Installation and operating instructions Owner's manual Owner's manual Installation and operating instructions

Contents

troubleshooting

Carrier Aquazone 50QE900 Installation And Operating Instructions Manual Manual pdf 4 page image

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 111 Catalog No. 535-00107 Printed in U.S.A. Form 50QE-6SI Pg 4 1107 6-03 Replaces: NewBook 1 4Tab 5a 5aCopyright 2003 Carrier CorporationTROUBLESHOOTINGTable 3 — TroubleshootingPROBLEM SOLUTIONDisplay on thermostat not illuminated. Check for 24 vac at the R terminal connection. Terminal R must be connected for properthermostat operation.Cooling will not energize. Select COOL mode. Decrease cooling set point to 10 degrees below room temperature.Check for 24 vac at Y1 terminal. If present, thermostat is operating correctly and problemis with wiring or equipment. If 24 vac is not present, replace the thermostat. Check forCompressor Cycle per Hour Limit. Cooling may be locked out.Heating will not energize. Select HEAT mode. Increase heating set point to 10 degrees above room temperature.Check for 24 vac at W1/O/B terminal. If present, thermostat is operating correctly andproblem is with wiring or equipment. If 24 vac is not present, replace the thermostat.

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