AllenG
05-07-2011, 11:33 AM
Hi.
Over the last little while I have noticed that the outdoor unit seems to be ramping up and down a lot when in operation (heating). usually it just ticks along once up to temperature. Last night was the coldest night we have had this winter and got to around -1 degC frost outside. This morning the indoor unit Timer led was flashing.
The only error code is H16 which looks like it can be one of three things "Power Transistor Module or Outdoor PCB Faulty. Very Low Gas"
I had a problem with low gas last summer where the unit wasn't cooling. the installer found a cracked brass fitting where the piping connected to the indoor unit pipes.
I have powered the unit on & off and it is running again. The outdoor unit does seem to be running pretty hard for the amount of heat coming out of the indoor unit though.
Before calling in the installer I would like to do some homework myself and would appreciate some comments from those with some experience.
1. Given the cold night and the outdoor unit ramping up/down is it likely to be an electronics problem or Very low gas?
2. Is there no warning or error code for low gas pressure without another fault?
3. I believe the unit remembers the last 3 or 4 errors, how do I check for previous errors?
4. the document I have seen says "Fault Codes are cleared from memory by setting Test Cooling and shorting the RESET terminals in the controller battery compartment."
I don't see any Reset terminals in the controller battery compartment. only the recessed "Check" and "Reset" buttons. The Reset button only seems to reset the remote control to default values.
Regards Allen.
Over the last little while I have noticed that the outdoor unit seems to be ramping up and down a lot when in operation (heating). usually it just ticks along once up to temperature. Last night was the coldest night we have had this winter and got to around -1 degC frost outside. This morning the indoor unit Timer led was flashing.
The only error code is H16 which looks like it can be one of three things "Power Transistor Module or Outdoor PCB Faulty. Very Low Gas"
I had a problem with low gas last summer where the unit wasn't cooling. the installer found a cracked brass fitting where the piping connected to the indoor unit pipes.
I have powered the unit on & off and it is running again. The outdoor unit does seem to be running pretty hard for the amount of heat coming out of the indoor unit though.
Before calling in the installer I would like to do some homework myself and would appreciate some comments from those with some experience.
1. Given the cold night and the outdoor unit ramping up/down is it likely to be an electronics problem or Very low gas?
2. Is there no warning or error code for low gas pressure without another fault?
3. I believe the unit remembers the last 3 or 4 errors, how do I check for previous errors?
4. the document I have seen says "Fault Codes are cleared from memory by setting Test Cooling and shorting the RESET terminals in the controller battery compartment."
I don't see any Reset terminals in the controller battery compartment. only the recessed "Check" and "Reset" buttons. The Reset button only seems to reset the remote control to default values.
Regards Allen.