Honeywell RLV4305A1000 Programmable Thermostat Owner’s Manual
Programmable
Thermostat
RLV4305A1000
am
Owner’s Manual
Read and save these
instructions.
For help please visit
honeywellhome.com
M38836
Application
This thermostat is designed to control an electric heating system such as a baseboard
heater, a radiant ceiling, a convector or a fan-forced heater.
The thermostat CANNOT be used with:
• a resistive load under 0.83 A
• a resistive load over 14.6 A
• a system driven by a contactor or a relay (inductive load)
• a central heating system.
WARNING Electrical Shock Hazard.
This thermostat is a line voltage control (120–240 Volts). Do not install it if you
are not completely familiar with house wiring. If handled improperly, there is risk
of electric shock hazard, which may cause serious injury or death.
Do you need assistance? We are here to help.
Call 1-800-831-2823 for wiring assistance before returning the
thermostat to the store.
| General | Details |
|---|---|
| Name | Honeywell RLV4305A1000 Programmable Thermostat Owner’s Manual |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.44 MB |

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Honeywell RLV4305A1000 Manual: Questions and Answers
Honeywell RLV4305A1000 specifications
| Power supply | 120/240 VAC, 60 Hz |
| Maximum load | 14.6 A (resistive only) |
| Setpoint range | 41 °F to 86 °F (5.0 °C to 30.0 °C) |
| Display range | 32 °F to 99 °F (0 °C to 50.0 °C) |
| Storage temperature | -4 °F to 120 °F (-20 °C to 50 °C) |
What does the am symbol mean on a Honeywell RLV4305A1000 display?
The am indicator shows that the thermostat is in Automatic mode, where temperature adjusts by time of day. Owner's Manual, p. 5
Can I use the Honeywell RLV4305A1000 with a fan-forced heater system?
Yes. Set the Fan parameter to Yes in the advanced settings menu to prevent premature motor burnout. Owner's Manual, p. 7
What do the mode indicators mean on a Honeywell RLV4305A1000?
| Mode | Meaning |
|---|---|
| Auto | Temperature adjusts by programmed period |
| Man | Manual temperature control only |
| Away | Preset low temperature for extended absence |
| Standby | Heating disabled except frost protection at 41°F |
What do error codes E1 and E2 mean on the Honeywell RLV4305A1000?
Sensor error reduces thermostat performance.
| Code | Meaning |
|---|---|
| E1 | Sensor error, thermostat performance reduced |
| E2 | Sensor error, thermostat performance reduced |
How do I use the Up and Down buttons on the Honeywell RLV4305A1000?
Raise the setpoint with Up, lower it with Down. Use them to turn the heater on and off during installation verification. Owner's Manual, p. 3
What's the difference between the Hour and Min buttons on the Honeywell RLV4305A1000?
| Button | Purpose |
|---|---|
| Hour button | Sets the hours on the clock |
| Min button | Sets the minutes on the clock |
How long does the backlit screen stay on for the Honeywell RLV4305A1000?
12 seconds after pressing any button. Owner's Manual, p. 4
Honeywell RLV4305A1000 compared with other Honeywell thermostats
| Specification | Honeywell RLV4305A1000 | Honeywell RLV3100 | Honeywell RLV3150 | Honeywell RLV4300 |
|---|---|---|---|---|
| Power supply | 120/240 VAC, 60 Hz | 240 VAC, 60 Hz | 240 VAC, 60 Hz | 120/240 VAC, 60 Hz |
| Maximum load | 14.6 A (resistive only) | 3000 W | 12.5 A (resistive only) 3000 W @ 240 VAC | 12.5 A (resistive only) |
| Setpoint range | 41 °F to 86 °F (5.0 °C to 30.0 °C) | 40 to 85°F (5 to 30°C) | 5.0°C to 30.0°C (41°F to 86°F) | 5.0°C to 27.0°C (41°F to 81°F) |
| Display range | 32 °F to 99 °F (0 °C to 50.0 °C) | 32 to 122°F ( 0 to 50°C) | 0°C to 50.0°C (32°F to 122°F) | 0°C to 50.0°C (32°F to 99°F) |
| Storage temperature | -4 °F to 120 °F (-20 °C to 50 °C) | -4 to 120°F (-20 to 50°C) | -20.0°C to 50.0°C (-4°F to 122°F) | -20.0°C to 50.0°C (-4°F to 120°F) |































