Keep track of service info. Temperatures and Pressures.

Winter Numbers

34 Degrees= Resting. H=60  L=60 

90 Degrees at vent. H=200-210. L=43.5-45

Ryan Add 33 to Temp.

Arizona No ends to gauges.

Car A/C charge.  Pre 1993=R12 200-225 PSI

After 1993 R134A 225-250 PSI

Appliance Parts Time 384-8888

M-F=8-6

SA= 8-5

SU= 9-3

Color code

Red-Power

RC-Cooling lead transformer

RH-Heating lead transformer

Green-Indoor Fan

Yellow-Cooling

White-Aux Heat Strip

Com-Return or neutral

Orange-Reversing valve energised in cool

Blue or Brown-Reversing valve energised in heat

X-Warning Light

Numbers mean stages.

HELPFUL INFO

1 Ton= 12000 BTU an hour

2 Ton= 900 SQ. FT.

2.5 Ton= 1200 SQ. FT.

3 Ton= 1500 SQ. FT.

4 Ton= 2100 SQ.FT.

5 Ton= 2400 SQ.FT.

Refrigerator

Refrigerator low side 3-5 PSI

Normal opperation temp is 40 degrees inside.

High side= 105PSI

Low side= 5 PSI

Commpressor

HIGH OHM opposite is COMMON

MED OHM opposite is RUN

LOW OHM opposite is START

Replace relay with capacitor

Condensor should be +30 over ambient.

12 SEER or more ambient +20

Ambient+30=10SEER and below

Ambient+20=13SEER

A/C whinning could be compressor getting hot.

Insulate exterior TXV.

Air Vent CFM= .345 to 417

1 Watt= 3.413 BTU

400 CFM Heatpump

700 CFM Straight A/C per Ton

Humming Noise check contactors, relays and capacitors.

40 Amp Breaker for 3.5 Ton Heatpump.

A/C 150 PSI off= High Side

A/C Tune up TOOL list

Garden hose with nozzle

Plyers

Bucket

Meters

Water sprayer for with coil cleaner

Stiff Bristel plastic scrub brush

A/C metal tape

Oiler

Caulking

Screws

Ladder

Schrader valve caps, Shrader Valve

Screwdriver

Marker

Contactors

Connectors

Refrigerant

Gauges

Cordless Drill

Mat for Hot Roof

Check condensation lines

Check Indoor Coil

Tighten power screws

Oil Fans