Heat Controller DMH18DB-1 Service Manual page 64

Wall mounted multi-split system air conditioning/heat pump
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Troubleshooting Guide
Error
code
33
D-Pipe Temp. High
115°C(239°F)
100°C(212°F)
95°C(203°F)
❑ Check Point
1. Check the install condition for over load.
2. Check the SVC V/V open.
3. Check the leakage of refrigerent.
4. Check the constant compressor.
Error
code
51
Capacitor error
❑ Check Point
1. Check the indoor unit capacity.
2. Check the combination table.
# In the tropical model case
➔ single cycle has no error for over capacity.
64 Multi type Air Conditioner
Title
• Discharge sensor
temp. high
COMP OFF
LEV OPEN(16PULSE/MIN)
LEV OPEN(10PULSE/MIN)
NORMAL
Title
• Over Capacitor com-
bination
Cause of error
• Check the discharge pipe sensor.
• Check the install condition for over load.
• Check the leakage of refrigerent.
• Check the SVC V/V open.
Cause of error
• Check the indoor unit capacity.
• Check the combination table
Check point & Normal condition
Check point & Normal condition

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