Stermay HT-788A, Operation Instruction Manual

11

HT-788A  DC12V

If the pump is faulty, please read and check according to 

the troubleshooting guide. If the guide can’t solve the 

problems, please contact local distributors.

Problem

Reason

Solution

Pump without 

power

The plug doesn’t 

connect to the power.

Ensure the plug inserts 

into cigarette lighter 

completely.

LCD screen shows 

pressure value

＞

0  

The pressure will 

be increased 

quickly in short 

time

Temperature difference 

causes sensor drifting.

The airflow meets 

obstacle, the air doesn’t 

enter inflatable 

products.

Cut off power 

immediately, and take 

down the nozzle to 

check if it is blocked or 

not, clear it then restart.

High/low pressure 

switch over back 

and forth

Folding or burdening 

the product cause it.

The pump works too 

long so that the 

temperature of sensor 

is too high.

Flatten the product or 

reduce the burden.

Cut off power, restart 

the pump when the 

temperature is normal.

Set the pressure value 

to operate under the 

condition of pressure 

value is not zero 

clearing after power on.    

First, cut off power and 

take down air hose, then 

restart the pump, keep 

pressing “     ” for 6 

seconds till zero clearing, 

finally, set required 

pressure value to operate.

Keep pressing 

"   " 

for 6 

seconds will be zero 

clearing.