Question about Coleman Mach 15 Air Conditioner

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Low and high pressure,

What is the normal low and high pressure, R-22..??????????????

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Thanks for the help>>

four blue blocks....fixya....

thanks wayne earles

Posted on Jul 01, 2008

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High pressure any where from 200-325. Low pressure around 65-70ish. But pressure doesn't really tell you much about how the system is working. You also need to check your superheat on the vapor line and your subcooling on the liquid line. If you don't know what I'm talking about, then you are treading in very dangerous territory of doing serious damage to your system if you are trying to adjust the charge based solely on pressure.

Posted on Jun 30, 2008

  • Chris Lyon
    Chris Lyon Jul 04, 2008

    Wayne,

    If you would be so kind as to go back in and rate my solution from your "wearles" login. There is actually a Fix-Ya icon you need to click on there for the system to acknowledge your rating.



    Thank You,

    Chillmaster

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1 Answer

What are the running compressor pressures H&L


Thats a hard question to answer! what Type of refrigerant is in it? R-22 or R410A? If its R-22 you want to see about 60-65# low side and 225 -240 high side. those can vary with outside temperature. R-410A look for 120# low side and 450-475# high side. DO NOT USE R22 MANIFOLD SET ON R410A SYSTEM!! IT WILL NOT TAKE THE HIGH PRESSURES AND COULD EXPLODE.

Aug 12, 2014 | Intertherm P3RA-036K Air Conditioner

Tip

Detroit Diesel Fault Codes


Code Description DDEC V Circuit
11 P 187 4 Chain PTO. Short circuit in the power
11 P 187 7 control system PTO wrong answers
12 P 187 3 Chain PTO. Short circuit in the ground
13 P 111 4-level circuit antifreeze. Short circuit in the ground
13 P 111 6 second-level circuit antifreeze. Short circuit in the ground
14 P 52 3 circuit coolant temperature intercooler. Short circuit in the power
14 P 110 3 circuit temperature antifreeze. Short circuit in the power
14 P 175 3 Chain oil temperature. Short circuit in the power
15 P 52 4 circuit coolant temperature intercooler. Short circuit in the ground
15 P 110 4 circuit temperature antifreeze. Short circuit in the ground
15 P 175 4 Chain oil temperature. Short circuit in the ground
16 P 111 3-level circuit antifreeze. Short circuit in the power
16 P 111 5 second circuit level antifreeze. Short circuit in the power
17 P 51 3 Throttle position circuit failed high
17 P 72 3 Bypass position circuit failed high
17 P 3 354 Relative humidity sensor circuit failed high
18 P 51 4 Throttle position circuit failed low
18 P 72 4 Bypass position circuit failed low
18 P 354 4 Relative humidity sensor circuit failed low
21 P 91 3 TPS circuit failed high
22 P 91 4 TPS circuit failed low
23 s 65 3 Oxygen content circuit failed high
23 P 174 3 Chain fuel temperature. Short circuit in the power
24 s 65 4 Oxygen content circuit failed low
24 p 174 4 Chain fuel temperature. Short circuit in the ground
25 no codes
26 s 25 November Aux. shutdown # 1 active
26 S 61 11 Aux. shutdown # 2 active (Incorrect SID. subject to change)
27, p 105 3 circuit temperature in the reservoir. Short circuit in the power
27 p 171 3 Ambient air temp circuit failed high
27 p 172 3 Air temp, circuit failed high
28, p 105 to 4 Chain manifold temperature. Short circuit in the ground
28 p 171 4 Ambient air temp circuit failed low
28 p 172 4 Air temp, circuit failed low
29 p 404 4 TCO temperature circuit failed low
29 p 351 4 TCI Temperature circuit failed low
31 S 51 3 Aux. Output # 3 open circuit (high side) S3
31 S 51 4 Aux. Output # 3 short to ground (high side) S3
31 S 51 7 Aux. Output # 3 mech. system fail S3
31 s 52 3 Aux. Output # 4 open circuit (high side) T3
31 s 52 4 Aux. Output # 4 short to ground (high side) T3
31 s 52 7 Aux. Output # 4 mech. system fail T3
32 S 238 3 SEL short to battery B1
32 S 238 4 SEL open circuit B1
32 s 239 3 CEL short to battery B2
32 s 239 4 CEL open circuit B2
33 p 102 3 Boost pressure circuit failed high
34 p 102 4 Boost pressure circuit failed low
35 p 19 March Ext range oil pressure circuit failed high
35 p 100 3 Chain oil pressure. Short circuit in the power
36 P 19 April Ext range oil pressure circuit failed low
36 P 100 4 Chain oil pressure. Short circuit in the ground
37 P 18 March Ext range fuel pressure circuit failed high
37 P 94 3 Chain fuel pressure. Short circuit in the power
37 P 95 3 Fuel Filter Restriction circuit failed high
38 P 18 April Ext range fuel pressure circuit failed low
38 P 94 4 Chain fuel pressure. Short circuit in the ground
38 P 95 4 Fuel Filter Restriction circuit failed low
39 S 146 2 Mechanical error EGR valve
39 S 146 12 Mechanical error EGR valve
39 S 146 return valve 7 does not meet the exhaust
39 S 147 2 turbocharger control mechanism does not respond
39 s 147 12 turbocharger control mechanism does not respond
39 s 14 147 current returns exhaust gases enough
39 S 147 11 turbocharger control mechanism does not respond
39 S 147 7 turbocharger control mechanism does not respond
41 S 21 0 Too many SRS (missing TRS)
42 S 21 January Too few SRS (missing SRS)
43 p 111 1 Low coolant level
44 p 52 0 ntercooler coolant temp, high
44 p 105 0 temperature in the reservoir above the norm
44 p 110 0 antifreeze temperature above normal
44 p 172 0 Air inlet temp, high
44 p 175 0 Oil temperature above normal
45 p 19 January Ext range oil pressure low
45 p 100 1 Oil pressure below normal
46 p 168 1 Low voltage batteries
46 S 214 1 RTC Backup Battery Voltage Low
46 S 232 1 Sensor Supply Voltage Low A3 & W1
P 0 47 18 Ext range fuel pressure high
P 47 94 0 The fuel pressure above normal
47 p 0 102 Turbo boost press high
47 p 106 0 Air inlet pressure high or TCBV diff press high
47 p 164 0 Injection control pressure high
48 p 18 January Ext range fuel pressure low
48 p 94 1 fuel pressure below normal
48 p 106 1 Air inlet pressure low
48 p 164 1 Injection control pressure low
48 p 351 1 TCI Temperature below range
48 p 404 1 TCO Temperature below range
48 p 411 1 EGR Delta pressure low
48 p 412 1 EGR Temperature low
49 p 351 0 TCI Temperature above range
49 p 404 0 TCO Temperature above range

More Fault Codes here Detroit Disel DTC

on Dec 20, 2016 | Cars & Trucks

1 Answer

Why are my high pressure real low and low pressure is good on my r-22 heat pumpWhat is wrong.


high side is dependant on outside air temp.... or could be a restriction in high side line

Jul 09, 2014 | Ruud UAKA042 Air Conditioner

1 Answer

My AC doesn't seem to be as cool as usual ive checked the pressure ( 100 and 30 )but i cant find what normal is. the model # on my unit is 561cj048-f


Hello, if the high side pressure iS 100 and low side 30, then the unit is undercharged. Im assuming this is a R-22 unit. Typically your low side should be between 65-70 psig and high side should be between 220-230 under normal conditions.

Jul 08, 2011 | Bryant Heating & Cooling

1 Answer

What are the low side & high side normal pressures, it cooling but not like it use to


If it is Refrigerant 22, Low side will be about 65lbs and the high side will be 250, on a 85 degree F day.

May 19, 2011 | Heating & Cooling

1 Answer

Temp off air coming out of register 74 degrees suction line temp is 42 degrees but high side line isnt warm dont look like it is wanting to take freon either compressor is running new system low side is...


Hello, what is your high side pressure? A bad compressor will show abnormally high low side pressure with abnormally low high side pressure. That 45 low side pressure is low And superheat high. If you high side pressure is normal toma little above normal but the low side remains low you have a restriction in the system, that might be why it's not taking in tne freon. Let me know you high side pressure

May 11, 2011 | Goodman Heating & Cooling

1 Answer

How do you check to see if the high side is leaking back into the low side on a scroll compressor suction pressure is 90psi R-22 suction line is warm but not hot


90 psi is very high for R22....low for R410 refrigerant. If leaking by the head pressure and suction pressure will be close to to the same reading

May 10, 2010 | Heating & Cooling

1 Answer

Oil pressur low


I have just cured my low oil pressure (and leaks) by using a stop a leek additive from e-bay. LUCAS engine oil stop a leak. £14.99($22 approx)
It takes a while too get it in the engine as it is extremely thick, but works very well. It evens stopped the slight noise from the oil pump.

Sep 26, 2009 | 1996 Pontiac Trans Sport

2 Answers

Indoor unit temperature between 60F & 70F after R22 charge..


The pressure changes with temperature, it is not a true gauge to ensure a proper charge.

You should have a 15 to 20 degree temp drop across the evap coil. (return air vs supply air)

Can you verify that the compressor is running?
Not the condenser, but the compressor located inside the condenser (outdoor unit)

it really sounds like it is still undercharged.
Check the temp drop, let me know what it is.
Also tell me what the outdoor ambient temp is.

( for example.... 98 degree outdoors with 85 degree indoor temp could result in pressures something like 325 on the high side and 75 or 80 on the low side.
With the exact same unit, but 80 degree outdoor temp combined with 70 degree indoor temp, your pressures could read 215 low side and 55 low side. Not to mention that more efficient units often have higher pressures on the low side because they have more coil space and remove heat more efficiently)

Aug 21, 2009 | Sanyo Split System Air Conditioner

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