Bryant PAYNE 579C - Manual (Page 6)

Refrigerant Circuit
The refrigerant circuit is difficult to check for leaks without
proper equipment: therefore, if inadequate cooling is sus­
pected, contact your local dealer for service.
Combustion Area and Vent System
The combustion area and vent system should be visually in­
spected before each heating season. The normal accumula­
tion of dirt, soot, rust, or scale can result in loss of efficiency
and improper performance if allowed to build up. Accumu­
lation on the main burners can result in the burners firing
out of normal time sequence. This delayed ignition is charac­
terized by an extra loud Ignition that can be quite alarming.
4. When you have completed your inspection, follow the
startup procedures in this manual to restore your unit to
operation.
5. Replace heating section access panels.
6. Observe unit heating operation, and watch the burner
flames through the observation ports (see Figure 1) to see
if they are bright blue. If you observe a suspected mal­
function, or that the burner flames are not bright blue,
call your dealer.
; If your unit makes an especially loud noise
le main burners are ignited by the pilots, shut
the heatingsection and call your dealer.
Refer to Figures 1 and 3. Using a flashlight, proceed as
follows to inspect the combustion area and vent system of
your unit.
1. Turn off gas supply and electrical power to your unit.
2. Remove heating section access panels.
3. Carefully inspect gas burners and pilot areas for dirt,
soot, rust, or scale.
NOTE: Burner flames that have a mixture of yellow,
orange, or red flames together with the blue may
not be burning gas efficiently. Your dealer may
have to adjust the air/gas mixture and/or clean the
burners.
Before Calling for Service
If your combination gas heating/electric cooling unit does
not appear to be performing properly, or does not operate at
all, you may save the cost of an unscheduled service call if you
check a few things yourself before calling for service.
Insufficient Airflow
After your equipment has been in operation for a short
period, you should become familiar with the “feel” of the air
circulation. If you sense a change in the airflow, your
problem is probably dirty air filters. Inspect the filters.
If you determine that dirty filters are not causing the
problem, call your dealer for service.
Unit Fails to Operate
Sometimes a unit will stop operating because of an actual
malfunction: however, it is common for a unit to appear to
have stopped operating because an easily remedied situation
has taken place. If your unit fails to operate, follow these
step-by-step procedures, and proceed only to the next step if
the unit fails to start.
1. Check to be sure that the conditioned space thermostat
is above the space temperature during heating season, or
below the space temperature during the cooling season.
Also, make sure that SYSTEM switch is in the proper
HEAT or COOL position — and not in the OFF position.
2. Check to be sure that the electrical power supply to your
unit is ON, that a fuse has not blown, or that a circuit
breaker has not tripped.
3. During the heating season, check to be sure that the
manual shut-off valve in the gas supply pipe leading to
your unit is in the open position. The valve is open if the
lever points in the same direction the pipe runs, and it is
closed if the lever is at a right angle to the pipe. If the
valve is closed, open it and then follow the startup pro­
cedures in this manual..
4. During the heating season, check the manual gas shutoff
to be sure that it is in the ON position.
5. If your unit still fails to operate, call your dealer for
service.
When Calling for Service
The product, model, and serial numbers for your unit, to­
gether with the date installed (recorded in the space pro­
vided at the front of this manual), will be helpful for your
dealer. If the dealer knows exactly what you have, he may be
able to offer some suggestions over the phone to remedy the
problem. This could save you needless expense and the dealer
a needless visit.
NOTE: If you do not have a dealer, refer to your telephone
directory or yellow pages for the nearest dealer for
the brand name of your unit.
COPYRIGHT ® 1980
BDP Company
Division of Carrier Corp.