White-Rodgers Thermostat Error Codes and Messages

Allow the documented compressor delay

Starting Soon on 1F83C-11PR. Copeland says this appears while the compressor lockout feature operates, with up to a five minute delay before the compressor starts. Allow that interval without changing settings again.

A flashing set temperature on Blue 1F95-1277 or 1F95-1291. Their manuals describe this during the compressor time delay when compressor lockout is enabled. That delay can last up to five minutes. The flashing number alone is not a Comfort Alert code.

If the delay ends and the system still does not respond, describe that as no heating or cooling, rather than an endless countdown: where to start with an unresponsive system.

Read the room temperature beside the message

Copeland’s 1F83C-11PR troubleshooting table gives several possibilities under Call for Service. One is heating that cannot bring the room within 10 degrees of the setpoint in two hours; another is cooling that cannot do so. That alert does not select a replacement part.

Two dashes where room temperature belongs. The same table directs thermostat replacement if the room temperature reads “–“. Tell the service company about the missing temperature, not just the service icon.

Buttons that do nothing. Copeland says to check whether keypad lockout is enabled, indicated by the padlock icon. This is separate from the compressor delay above. A locked keypad is not proof that the thermostat has failed.

Count a service alert only on the matching setup

Copeland’s 1F95-1277 and 1F95-1291 manuals describe Comfort Alert monitoring an outdoor air conditioning system with a single phase Copeland Scroll compressor. With the Comfort Alert thermostat interface fitted, Call For Service flashes at the same rate as the module’s yellow alert light.

These are the manuals’ diagnostic labels for the service person to investigate. Do not use this table for a flashing time, temperature, or a different thermostat’s message.

The service message has another use. For heat pump setups with an outdoor sensor, both Blue manuals describe a safeguard under auxiliary heat cutoff. If indoor temperature falls below 45 degrees F because of a possible heat pump malfunction, the thermostat switches to auxiliary heat. Call for Service appears then too. The words alone do not establish a Comfort Alert flash count.

Choose a reset for the actual symptom

Replace beside the battery symbol on 1F83C-11PR. Copeland calls for new premium AA alkaline batteries. For a blank or unresponsive display despite good batteries, its reset procedure removes the batteries for two minutes. It says this preserves the menu settings and program. If the problem continues after reinstalling the batteries, Copeland says to replace the thermostat.

Blue 1F95-1277 and 1F95-1291. Copeland says a voltage spike or static discharge can blank the display or make these Blue models behave erratically. To reset them, remove the thermostat from its wall plate and take out the batteries for two minutes. Reinstall both afterwards. If it still misbehaves, contact the heating and cooling service person.

A schedule reset is different. On 1F83C-11PR, Copeland’s separate Menu and Backlight button procedure restores the schedule and user settings to factory defaults. That is not the battery removal reset. Do not erase a working schedule to address an equipment alert.

Change UV Lamp on either Blue model, or Change Pad on 1F95-1291. Copeland describes these as maintenance reminders based on accumulated operation. Arrange the applicable maintenance; the manuals use Clean Display to clear the reminder. Clearing it does not perform the maintenance.