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Have a 2.5 ton h/p with 67 psi low & 140 high psi. (R-22) . Cooling ok , why such low pressure on high side? Ambient temp. 88 F.
To determine the head pressure consider the condenser coil surface area, if it is large and high efficiency go ambient plus 25F convert to pressure according to refrigerant used.
Design conditions are 95 ambient and 80 indoor, you will have approx. a 125F condensing temp which with R22 will be about 270 psi.
you need to take the 88 and add 25 or 30 and convert to pressure, the head pressure must be at least 100 psi above the low side for a cap tube to operate normally.
What else can I help you with?
What causes high head pressure and normal suction pressure in a air conditioner?
non condensebles in system dirty cond coil high ambient poss over charge
What causes the loud sound when your home air conditioner shuts off I am told it is head pressure is is a problem...leo?
What make of unit is it? What does the sound sound like?
What causes high head pressure in a air conditioner?
5 Causes of high head pressure: 1.) Dirty condenser tubes 2.) High temp entering condenser water 3.) Low flow of condenser water 4.) Water bypassing at division plate 5.) Non-condensables in the system
A clogged air conditioner condenser would cause what?
high head pressure and a higher supply temp.
Where is the low pressure air conditioner valve on a 2003 Chrysler Town and Country?
The low pressure air conditioner port can be found on the top of the air conditioner compressor. The low pressure port should be labeled as such.
Wherer is the air conditioner's low-pressure service port in a 2000 acura 3.2TL?
The 2000 Acura air conditioner low pressure service port can be found on the top of the air conditioner compressor. The low pressure service port will have a blue top.
What are the correct pressures for R410a?
The pressure for an R410a air conditioner system should be 118psi LP and 412psi HP. This is the same pressure as an R22 air conditioner.
What causes your air conditioner to go out?
overuse of the fuses
Where is the ac low pressure port in a 98 jimmy?
The 1998 GMC Jimmy air-conditioner low pressure for is located on the top of the air conditioner compressor. The low pressure port will be marked as such.
How does an air conditioner dehumidify the air?
An air conditioner dehumidifies the air by cooling it down, which causes the moisture in the air to condense into water droplets that are then collected and drained away.
What causes an air conditioner to freeze?
An air conditioner can freeze due to low refrigerant levels, restricted airflow, or a malfunctioning thermostat.
What causes an air conditioner vent to sweat?
excessive humidity.
