Page 2 - MOUNTING AND WIRING; CAUTION; REMOVING OLD THERMOSTAT; CONTINUED FROM PAGE 1; WARNING; O/B Terminal Switch Selection
www.white-rodgers.com MOUNTING AND WIRING Take care when securing and routing wires so they donot 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...
Page 3 - CONTINUED FROM PAGE 2
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...
Page 4 - CONTINUED FROM PAGE 3; electric; gized on a call for heat.; section for proper thermostat configuration.; CONFIGURATION; section for proper thermostat configuration.; SYSTEM L C
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 L...
Page 5 - CHECK THERMOSTAT OPERATION; F, DO NOT operate the
CAUTION ! CHECK THERMOSTAT OPERATION 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 operateproperly, contact a qualified serviceperson. Fan Operation If...
Page 6 - CONTINUED FROM PAGE 4; SPECIFICATIONS; Configuration Menu; OPERATION
CHECK THERMOSTAT OPERATION 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 TO 3 HI FA (ON)...
Page 7 - TROUBLESHOOTING; CONTINUED FROM PAGE 5
www.white-rodgers.com Symptom Possible Cause Corrective Action No Heat/No Cool/No Fan 1. Blown fuse or tripped circuit breaker. Replace fuse or reset breaker. (common problems) 2. Furnace power switch to OFF. Turn switch to ON. 3. Furnace blower compartment door or Replace door panel in proper posit...
Page 8 - CONTINUED FROM PAGE 7
Symptom Possible Cause Corrective Action Furnace/Air Conditioner Cycles Too Fast or 1. The location of the thermostat and/or the Digital thermostats normally provide precise Too Slow (narrow or wide temperature swing) size of the Heating/Cooling System may be temperature control and may cycle faster...
Page 2 - MOUNTING AND WIRING; CAUTION; REMOVING OLD THERMOSTAT; CONTINUED FROM PAGE 1; WARNING; O/B Terminal Switch Selection
www.white-rodgers.com MOUNTING AND WIRING Take care when securing and routing wires so they donot 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...
Page 3 - CONTINUED FROM PAGE 2
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...
Page 4 - CONTINUED FROM PAGE 3; electric; gized on a call for heat.; section for proper thermostat configuration.; CONFIGURATION; section for proper thermostat configuration.; SYSTEM L C
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 L...
Page 5 - CHECK THERMOSTAT OPERATION; F, DO NOT operate the
CAUTION ! CHECK THERMOSTAT OPERATION 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 operateproperly, contact a qualified serviceperson. Fan Operation If...
Page 6 - CONTINUED FROM PAGE 4; SPECIFICATIONS; Configuration Menu; OPERATION
CHECK THERMOSTAT OPERATION 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 TO 3 HI FA (ON)...
Page 7 - TROUBLESHOOTING; CONTINUED FROM PAGE 5
www.white-rodgers.com Symptom Possible Cause Corrective Action No Heat/No Cool/No Fan 1. Blown fuse or tripped circuit breaker. Replace fuse or reset breaker. (common problems) 2. Furnace power switch to OFF. Turn switch to ON. 3. Furnace blower compartment door or Replace door panel in proper posit...
Page 8 - CONTINUED FROM PAGE 7
Symptom Possible Cause Corrective Action Furnace/Air Conditioner Cycles Too Fast or 1. The location of the thermostat and/or the Digital thermostats normally provide precise Too Slow (narrow or wide temperature swing) size of the Heating/Cooling System may be temperature control and may cycle faster...