Emerson 1F73 manual

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Table of contents for the manual

  • Page 1

    Installation Instructions for Heating & Air Conditioning 1F73 Non- Pr ogrammable, A uto Changeover Multi-stage/Heat Pump Thermostat CONTENTS Preparations .................................................. 1 Thermostat Details ........................................ 1 Removing Old Thermostat ......................... 1-2 Mounting and Wiring ...[...]

  • Page 2

    www.white-rodgers.com MOUNTING AND WIRING Take care when securing and routing wires so they do not short to adjacent terminals or rear of thermostat. Personal injury and/or property damage may occur. CAUTION ! ATTENTION! This product does not contain mercury. How- ever, this product may replace a unit which contains mercury. Do not open mercury cel[...]

  • Page 3

    www.white-rodgers.com MOUNTING AND WIRING CONTINUED FROM PAGE 2 4 L R E/W1 24 VAC 120 VAC Hot SYSTEM MONITOR SWITCH Neutral THERMOSTAT SYSTEM G W2 Figure 2. Typical wiring diagram for single transformer heat pump systems TRANSFORMER (Class II Current Limited) Changeover Relay* C Y1 O/B/Y2 Compressor Contactor * Changeover Relay is energized in COOL[...]

  • Page 4

    MOUNTING AND WIRING CONTINUED FROM PAGE 3 4 C* R O/B/Y2* Compressor Contactor Stage 1 Heat Relay Stage 1 Heat Relay Stage 2 24 VAC 120 VAC Hot Neutral THERMOSTAT SYSTEM Y1 E/W1 W2 Figure 5. Typical wiring diagram for single transformer multi-stage systems Fan Relay G TRANSFORMER (Class II, Current Limited) *O/B Switch must be in “O” position Co[...]

  • Page 5

    CAUTION ! CHECK THERMOST A T OPERA TION www.white-rodgers.com NOTE To prevent static discharge problems, touch side of ther- mostat to release static build-up before touching any keys. If at any time during testing your system does not operate properly, contact a qualified serviceperson. Fan Operation If your system does not have a G terminal conne[...]

  • Page 6

    CHECK THERMOST A T OPERA TION CONTINUED FROM PAGE 4 5 1 Step Press Button(s) Displayed Press (Factory Default) to select: 2 HP 4* Configuration Menu 3 Set SYSTEM switch to OFF no HP and for at least 2 seconds and momentarily and momentarily SL FA OFF L (ON) ˚ C ˚ F 5 OFF 7 6 CL (OFF) 3 LO T O 3 HI FA (ON) and momentarily and momentarily and momen[...]

  • Page 7

    www.white-rodgers.com Symptom P ossible Cause Corrective Action No Heat/No Cool/No Fan 1. Blown fuse or tripped circuit breaker . Replace fuse or reset breaker . (common prob lems) 2. Furnace power s witch to OFF . T ur n s witch to ON. 3. Furnace blower compartment door or Replace door panel in proper position to engage panel loose or not properly[...]

  • Page 8

    Symptom Possible Cause Corrective Action Furnace/Air Conditioner Cycles T oo Fast or 1. The location of the thermostat and/or the Digital thermostats normally provide precise T oo Slo w (narrow or wide temperature s wing) size of the Heating/Cooling System may be temperature control and may cycle faster than influencing the cycle rate . some older [...]