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Indirect leak check
A single-port split only needs 13, 15, 16 and 19 — fill those and the check works it out. Add more if the system gives you them.
0 of 23 filled
Indirect leak check log
■ worked out for you1
Compressor amps L1
A
2
Compressor amps L2
Single phase: N/A
A
3
Compressor amps L3
Single phase: N/A
A
4
Discharge temperature
°C
5
Condensing pressure
bar g
6
Saturated condensing temp
°C
7
Discharge superheat
Discharge − condensing
—K
8
Air on condenser
°C
9
Air off condenser
°C
10
Temperature difference
Air off − air on
—K
11
Liquid line temperature
°C
12
Total subcooling
Condensing − liquid line
—K
13
Evaporator pressuresingle-port
bar g
14
Saturated evaporating temp
°C
15
Air on evaporatorsingle-port
°C
16
Air off evaporatorsingle-port
°C
17
Temperature difference
Air on − air off
—K
18
Suction line temp (evaporator)
°C
19
Suction line temp (compressor)single-port
At the service valve on a split
°C
20
Evaporator superheat
Suction (evap) − evaporating
—K
21
Total superheat
Suction (comp) − evaporating
—K
22
Oil sight glass
23
Liquid refrigerant level
Print or save this check
A signed record of the readings and what they showed. These details stay on this phone.
Indirect leak check
Engineer
Date6 November 2026
Site / customer
Unit
Refrigerant
| No. | Measurement | Value | Units |
|---|---|---|---|
| 1 | Compressor amps L1 | A | |
| 2 | Compressor amps L2 | A | |
| 3 | Compressor amps L3 | A | |
| 4 | Discharge temperature | °C | |
| 5 | Condensing pressure | bar g | |
| 6 | Saturated condensing temp | °C | |
| 7 | Discharge superheat | K | |
| 8 | Air on condenser | °C | |
| 9 | Air off condenser | °C | |
| 10 | Temperature difference | K | |
| 11 | Liquid line temperature | °C | |
| 12 | Total subcooling | K | |
| 13 | Evaporator pressure | bar g | |
| 14 | Saturated evaporating temp | °C | |
| 15 | Air on evaporator | °C | |
| 16 | Air off evaporator | °C | |
| 17 | Temperature difference | K | |
| 18 | Suction line temp (evaporator) | °C | |
| 19 | Suction line temp (compressor) | °C | |
| 20 | Evaporator superheat | K | |
| 21 | Total superheat | K | |
| 22 | Oil sight glass | ||
| 23 | Liquid refrigerant level |
| Evaporator coil condition | |
| Condenser coil condition | |
| Suction line condition |
What the pattern says
Indirect means inferred from performance — this record is the evidence for deciding on a direct search, never proof a leak exists or doesn't. The readings stand on their own either way.
Signed
Date
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