Control behavior when starting or stopping an automatically enabled Defrost Off-Cycle - PENN Controls - A421ABD - A421AED - Electronic Temperature Control - A421 Series Electronic Temperature Control

The following behavior is enforced:

• At power up, the initial Defrost Interval (dI) does not initiate a Defrost Cycle Time (dFt).
• A defrost cycle occurs at the beginning of each subsequent defrost interval.
• You can start or stop a defrost cycle using the SdF parameter or binary input (BIN).
• Starting a defrost cycle terminates the defrost interval (dI) and starts a new defrost cycle.
• Stopping a defrost cycle terminates the dFt and continues the current defrost interval (dI) until the start of the next regular dI and defrost cycle.