Alarm Messages
Control
40
The cause of alarm ‘CMP TOP OVER’ could be:
1. Water flow was not enough;
2. Refrigerant was not enough
3. Ambient temperature was too high;
How to do:
1. Check if the water flow was not enough, so that the heat exchange efficiency was not good;
2. Check the refrigerant quantity, and make sure the system has not any leak. ;
The cause of alarm ‘ADD OVER OR WATER FLOW TROUBLE ’ could be:
1. Water flow is not enough;
2. The connection of water flow switch was loose or water flow switch was broken;
3. There some air inside the water system, so that the heat exchange area was not enough;
4. The thermostat switch of the electrical heater was broken;
How to do:
1. Always ensure enough water flow; otherwise the flow switch can not open;
2. Check the wire connection of water flow switch was normal or not, or replace a water flow
switch;
3. Before install the system, please vent the air out from the water system, follow manual’s
instruction;
4. Measure the thermostat switch of electrical heater by ampere meter.
The cause of ‘LOW PRESS’ could be
˖
1. The refrigerant was not enough
2. The connection of low pressure switch was loose, or the switch was broken;
3. The outdoor fan can not run
How to do:
1. Check if there any place leak refrigerant, especially on the connections valves;
2. Check if the wire connection of low pressure switch was ok, or replace a new low pressure
switch;
3. Check if the outdoor unit’s fan was running, if not, please check if the fan was normal
The cause of ‘HIGH PRESS’ could be
˖
1. The water flow was not enough;
2. The high pressure switch’s connection was not good; or the switch was broken;
3. The ambient temperature was too high.
How to do:
1. Always ensure enough water flow; otherwise the flow switch can not open;
2. Check if the wire connection of high pressure switch was ok, or replace a new one;
