Troubleshoot/Gentry/Kanehili/RHEEM RH2T // RA20 Inverter system w/ ECONET thermostat

RH2T/RA20 INVERTER w/ECONET THERMOSTAT

Common Issues

  1. Thermostat display blank; no cooling: (Please proceed in order)
    1. Verify circuit breakers are in the ON position
      1. Locate circuit breaker panel.
        1. Locate breakers labeled ‘AHU’ (typically 17*19 or 21*23 for GENTRY Homes).
          1. If breakers are TRIPPED (middle), move to OFF position then ON. IF breaker trips, contact your A/C Tech.
          2. If breakers are OFF, move to ON position. IF breaker trips, contact your A/C Tech.
          3. If breakers are ON, proceed to 1.b
    2. Verify safety float switch is not engaged
      1. Locate the attic and access it with a ladder.
        1. Locate float switch (EZ Trap).
          1. Remove head (black part) from cup. Verify if water is present.
            1. WATER? Empty water and proceed to 1.c
            2. NO WATER? Proceed to 1.c
    3. Verify condensate drain is not clogged
      1. Locate the attic and access it with a ladder.
        1. Locate condensate drain trap (Black-insulated ¾” PVC pipe). Remove ¾” PVC cap. With a flashlight, verify if there is a clog.
          1. If the trap is clogged, proceed to clean with a wet/dry vacuum.
          2. If the trap does not appear to be clogged, verify by pouring approx. one quart of water into the drain.
            1. If water overflows, the drain is clogged further down the line and must be cleared. 
          3. If the condensate drain has been cleared and water is flowing normally, call your a/c tech
  2. “The outdoor unit turns on, but there is no air coming out of the vents.”
    1. With a ladder or step stool, verify airflow from a supply vent (adjustable louvers).
      1. Is the airflow WEAK? Check the air filter.
      2. Is the airflow NON-EXISTENT? There may be an issue with your indoor fan motor.
  3. “Everything runs, but the house doesn’t get cool or not as cool as before”
    1. Verify system has been maintained
      1. Check air filter - replace if dirty
      2. Check condenser coil is dirty - wash with water if dirty.
    2. Verify all supply vents are open
    3. System is low on refrigerant or compressor capacity has been reduced. Call your A/C tech.
  4. “I am getting error codes on the thermostat”
    1. Call your A/C tech and specify the error code displayed.
      1. Most error codes that will be displayed are not repairable by non-technicians.