20 Most Recent Comfort-Aire PAC-121 Air Conditioner Questions & Answers


should have drain pan that has to drain or be emptied out.

Comfort-Aire... | Answered on Feb 11, 2018


Try viewing the owner's manual here for further instructions about the reservoir. Page 10 of Heat Controller Inc OWNER MANUAL Portable Air Conditioner PE...

Comfort-Aire... | Answered on Jul 07, 2014


el error es el sensor de aire y de pozo cambia los 2 o checalos debe darte una resistencia como 6 .5 ohms si es alto como de 10 a 20 ohmsno sirve

Comfort-Aire... | Answered on Jun 13, 2012


Check the filter and the coils, if dirty same symptoms.

Comfort-Aire... | Answered on Jul 03, 2011


I have the same model, though several years old, and on mine E4 simply means the reservoir is full. Try emptying the reservoir tank and then turning the power on again. If the drain hose outlet isn't angled down, the water drains into the tank, which will need to be emptied regularly. (For constant use, may need to be emptied several times a day.)

Comfort-Aire... | Answered on Jun 08, 2011


F-1-Noc ommunicationbetween indoor and outdoor. Comms Error, check your wiring, remove external pumps. Split/Multi - check volts from terminal N to 3 = 0 - 65 Vdc, Multi V - 4 Vdc terminals 3 and 4

Comfort-Aire... | Answered on Jan 01, 2011


looking 4 manual 4 comfort aire a.c. model#pe-121a serial# 070301060

Comfort-Aire... | Answered on Jul 24, 2010


look in the phone book and look up comfort-air .. they should help you with this problem

Comfort-Aire... | Answered on Jun 28, 2010


We searched the internet till we found something that put us at ease. still not 100% but at least 75%-90%.

Comfort-Aire... | Answered on Jul 07, 2009


E4 shows up on the screen on my PAC-121 when the water reservoir on the right-hand-side is not pushed in all the way. If it is in all the way the switch that it engages may be bad or out of place.

Comfort-Aire... | Answered on Mar 23, 2009

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